Let us solve the following jigsaw puzzle. Jigsaw Puzzle We have 6 random pieces and we have formed a shape out of it. Let us apply the steps in problem solving. 1. To solve this, we have to understand what the problem is, first of all. We have to put the pieces of the jigsaw correctly together to form the correct shape. (that is to rearrange the puzzle in the correct form). 2. Next, think about all the possible ways to rearrange the pieces of the puzzle. 3. Then, pick, according to you, the best way to rearrange these pieces. 4. Now, start making the puzzle. 5. While doing so, if you feel that your method is not working, switch to your other possible solutions and retry. Repeat steps 3 to 5 until you get a perfect shape of the jigsaw. Technology Strand 145 0005_Sci_TB_G2_Techno Raw.indd 145 5/14/2020 8:07:57 PM
Programming is like talking to a computer. To communicate with our friends and family, we speak in human languages like English, Thai etc. Similarly, in order to communicate with the computers, we use a language called “computer language” or “programing”. There are hundreds of human languages present in the world for communication with one another various. In the same way, we have lots of different computer languages available to communicate with the computers. Some computer languages are “text based” while others are “visual based”. Text-based programming: the language that we type in the form of sentences or set of instructions Visual-based programming: drag and drop of blocks to perform specific tasks that are given to the computer In human language, the combination of words is termed a “sentence” and in computer language we call that an “instruction” or a “command”. The combination of the set of instructions is called a “Program”. Programming 146 Technology Strand 0005_Sci_TB_G2_Techno Raw.indd 146 5/14/2020 8:07:58 PM
There are different online and offline tools available through which we can explore the wonders of programming. Let us try out the programming on the website www.code.org. On this free plat form, we can explore the unlimited free options available. Let us see how this visual-based programming works on code.org. Suppose we have a character on the computer screen and we want to move that character forward, then we just need to drag the block which says: “FORWARD” and run the program. That character will move forward. If we want to move the same character backward, we just need to drag and drop the block which says: “BACKWARD”. We can even give an instruction to the computer how far or fast that character should move. We can change the size and physical appearance of the character as well. Usually when we write sentences in our language we may make some mistakes and the teacher corrects them for us. In programming, we call that sentence mistake an “error”. Our software will tell us we are making an error and will ask us to correct that error to see the results of our program. Technology Strand 147 0005_Sci_TB_G2_Techno Raw.indd 147 5/14/2020 8:07:58 PM
Technology is making a huge impact in our daily lives. From education to health to space on the Earth, we see the importance of technology everywhere we go. Without even flying to another place, we can experience the place virtually just by sitting in front of a computer screen. This is the beauty of technology. There was a time when people used to keep records, write letters, make calculations, and wrote books manually by hand. Nowadays, technology has eased up our lives. There are different text editing tools available through which we can write anything anywhere in no time. These text editing softwares are helping the world in numerous ways and saving everyone a lot of time. One basic common text editing software is Microsoft WordPad. Technology 148 Technology Strand 0005_Sci_TB_G2_Techno Raw.indd 148 5/14/2020 8:07:59 PM
We can type anything we want on this software—from writing the letters to numbers to inserting different symbols. We can write letters to our mother or complete our English essay in minutes now! After typing our complete document using this software, we can save our files, delete it, re-name, or open that up later to make changes. To save data on the computer, we are required to save the files we create. For example: You wrote a poem on WordPad. You will save this file with a specific name. Once we start creating different files on the computer we need to save those files in a Folder. A folder is a place where you keep your files. Let us assume you have a tiny library in your house. Your mother asks you to arrange the books on the shelves in the library. To keep your shelves organised, you will sort the books according to the subject and place them accordingly. For example, all math Working with Microsoft WordPad File Management Technology Strand 149 0005_Sci_TB_G2_Techno Raw.indd 149 5/14/2020 8:08:00 PM
Information Safety When you are surfing information online, it is very important to keep your personal information safe and secure. • While using the internet, do not share your information like name, age or home address to any stranger. • Do not trust anybody over the internet whom you have never met. books go in one block of the shelf, all English books go together in another block of the shelf, so on and so forth. Similarly, we want to keep our files organised in our computers as well. For this, we will keep all similar files in one folder. For example, all poems that you have typed will go in the folder labelled “Poems” and the letter that you typed will go in another folder named “Letters”. This way, all your data would be organized and it would be easy for you to look for your file whenever you need it. 150 Technology Strand 0005_Sci_TB_G2_Techno Raw.indd 150 5/14/2020 8:08:05 PM
Always follow the rules of the computer lab. 1. Try to use the Keyboard and Mouse gently. 2. Do not write on the Monitor. 3. Keep your computer desk tidy. 4. Do not touch the wires of the computer by yourself. Always ask your teacher or technical person who is present in the lab for help. Maintaining Computer Equipment • Always keep your personal information and personal computer to yourself. • Only share the information with your parents, teachers and the person who is helping you in technology at school or at home. Technology Strand 151 0005_Sci_TB_G2_Techno Raw.indd 151 5/14/2020 8:08:07 PM
Observing Gathering information about the environment using our senses as well as scientific instruments Comparing Identifying similarities and differences among objects, concepts or processes Classifying Grouping objects based on common properties Using apparatus and equipment Understanding the functions and limitations of various scientific instruments and handling them correctly for various tasks Communicating Sharing and receiving data in verbal, tabular and graphical forms Inferring Forming conclusions based on data Formulating hypothesis Forming an explanation for a set of observations Predicting Assessing the possibility of an outcome based on prior knowledge of how things usually turn out Analysing Identifying the patterns and relationships between pieces of data Generating possibilities Exploring different alternatives and choices other than the obvious one Evaluating Assessing the accuracy and quality of information Skills Processes Creative problem solving Analysing a problem and selecting an innovative and appropriate solution Decision-making Establishing and applying criteria to select from among seemingly equal alternatives Investigation Formulating questions or hypotheses, devising methods and carrying out these methods to find answers to the questions or to verify the hypotheses Thinking Skills 152 Thinking Skills 0005_Sci_TB_G2_Endlims.indd 152 5/14/2020 8:08:56 PM
Glossary Animal: A living thing that cannot make its own food but depends on other plants and animals for food Asthma: The condition when a person’s air passages become small and unable to breathe in enough air Battery: Two or more dry cells joined together Breathing: Physical process involving exchange of gases Clay soil: Soil that contains very small particles packed together; has a very fine texture Constipation: The condition where a person finds it difficult to pass motion Diabetes: The condition where a person’s urine contains ‘sugar’ Dry cell: A source of electricity Electrical method: A method of making magnets by connecting a magnetic material to an electrical circuit Electricity/electrical energy: A form of energy Energy: The ability to make things move or work Flatulence: A condition where a person suffers from too much wind and gas in his body; it usually results from indigestion Like poles: Two poles that are the same Living things: They can reproduce, grow, move by themselves, excrete and respond. They need air, food and water to stay alive. Loamy soil: Soil that contains particles smaller than those in sandy soil; has a finer texture Magnet: Made from iron or steel; has strongest force at the two ends called the north pole and the south pole Magnetic materials: Materials that are attracted by a magnet; e.g. iron, steel Materials: Things that are used to make products; e.g. wood, plastics, cloth, metal Glossary 153 0005_Sci_TB_G2_Endlims.indd 153 5/14/2020 8:09:01 PM
Non-magnetic materials: Materials that are not attracted by a magnet; e.g. wood, plastic Nutrients: Mineral salts found in the soil; needed by plants for healthy growth Plant: A living thing that needs air, water and light to make its own food Properties: Used to describe an object or a material; e.g. strength, hardness, ability to bend, ability to float Pupils: Small openings in the eyes that allow light to enter the eyes; may become larger or smaller Respond: Behave differently to changes in the surroundings Response: The reaction of an organism to stimulus Sandy soil: Soil that contains large particles and has a coarse texture Soil: Made up of different parts such as big and heavy stones, small stone particles and humus Solar energy: Energy from the Sun Spices and herbs: Plants or plant parts used to enhance the flavour of food Stimulus: A change in the environment or an external influence Teak: A tree that provides good quality wood for building houses Temperature: The degree of hotness; measured with a thermometer The Earth: The planet that we live on; it has suitable conditions to keep us alive The Moon: Closest neighbour of the Earth; it does not give out its own light The Sun: The nearest star to planet Earth; it gives out heat and light Toothache: A painful condition caused by a tooth decay Touch method: A method of making magnets by stroking a magnetic material with a magnet in one direction Unlike poles: Two poles that are different Waterproof: The ability to remain dry and undamaged when in contact with water 154 Glossary 0005_Sci_TB_G2_Endlims.indd 154 5/14/2020 8:09:06 PM
A Air ..............................5–6, 10–15, 23 Animal ..........8–12, 19–20, 22–26, 28–29, 33, 37–39, 42, 111, 115 Asthma .................................................6 B Bamboo ....................................40–41 Battery ................................77, 90, 93 Breathing .............................................5 C Clothing .....................................42–44 Constipation ....................................45 Cotton ................................................42 D Diabetes ............................................45 Dry cell .......................................89–90 E Earth ........................... 108–109, 112 Electrical method ...................76–78 Electricity/ electrical energy ....................86–92 Energy .......................................86–87, 91, 93, 108–115 forms of energy .................... 86–87, 91–92 heat energy ............................91–92, 108–109, 114–115 light energy .........91–92, 108–114 sound energy ..........................91–92 movement energy ................91–92 solar energy .......................108–109 F Fibre ............................................ 42, 44 Fish ...................................... 11, 37–39 Flatulence .........................................46 Float ............................................57–58 Fruits ...........................................36–37 G Gills .....................................................11 H Hard ........................................... 51, 58 Herbs .................................................35 Humus .....................................97, 100 L Light ........................................... 19–23, 91–92, 108–113 Living things .....10, 18–19, 22–23, 25–27, 29–30, 108, 110–111, 114 Lung .......................................5, 10–11 Index Index 155 0005_Sci_TB_G2_Endlims.indd 155 5/14/2020 8:09:06 PM
M Magnet ......................................67–84 magnetic materials .............. 68–70 non-magnetic materials ..... 68–70 uses of magnet......................79–81 Materials ................... 50–64, 68–70 Moon .....................................112–113 N Nutrients ..............................3, 13–15 P Plants ...........................................8–10, 13–15, 21–22, 24–26, 29, 32–33, 38–42, 44–47, 97, 100, 110–111 Poles ........................... 71–73, 75–76 north pole (of magnet) ................72 south pole (of magnet)................72 like poles ........................... 72–73, 75 unlike poles ............................. 73, 75 Power point .....................................89 Properties 57–59, 61–63, 71, 100 properties of magnets ........71–74 Pupil (of eye) ....................................19 S Shelter ........................................40–41 Silk ...............................................42–43 silkworm ...........................................42 Soil ............................................ 96–106 types of soil .............................96–98 sandy soil .........................................96 loamy soil .........................................97 clay soil ..............................................98 uses of soil ..........................100–103 Spices .................................................35 Straw ..................................................40 Sun .........................19–21, 108–116 T Temperature ...... 23–25, 114–115 Touch .......................................... 27–29 Touch method .................................76 V Vegetables ....................... 13–14, 34 W Water .......................... 3–5, 8, 11, 13 water filter .................................... 102 waterproof .......................................59 Wood/teak ....................... 40–41, 53 Wool ...................................................43 156 Index 0005_Sci_TB_G2_Endlims.indd 156 5/14/2020 8:09:07 PM
Chapter 1 p.1 Ball © Iuliia Dakalova | Dreamstime.com, Playground slides © Py2000 | Dreamstime.com, Green grass field © Liligraphie | Dreamstime.com, p..2 Palm tree © Yong hian Lim | Dreamstime.com, Beach © Natpol Rodbang | Dreamstime.com, Sand toys © Roberto Atencia Gutierrez | Dreamstime.com, p.4 Shoe rack © Chernetskaya | Dreamstime.com, p.9 Arrow © Atabik Yusuf Djufni | Dreamstime.com, p.12 Tooth vector © Microvone | Dreamstime.com, p.15 Senecry vector © Noviantoko Tri Arijanto | Dreamstime.com, p.17 Toothpaste © Dariusz Szwangruber | Dreamstime.com, soap © Trong Nguyen | Dreamstime.com Chapter 2 p.20 Tiger © Nilanjan Bhattacharya | Dreamstime.com, Field © Victoria Plotnikova | Dreamstime.com, rock © Chanon Tamtad | Dreamstime.com, cub © Isselee | Dreamstime.com, cub © Isselee | Dreamstime.com, p.21 Animals Group © Nmint | Dreamstime.com, p.22 Coral © Kelpfish | Dreamstime.com, Butterfly fish © Krzysztof Odziomek | Dreamstime.com, Flat fish © Andylid | Dreamstime.com, Moray eel © Nataliya Taratunina | Dreamstime.com, Surgeonfish © Chernetskaya | Dreamstime.com, Lion fish © Erika Kirkpatrick | Dreamstime.com, p.23 Grass blade © Chrupka | Dreamstime.com, White corals © Tpibernik | Dreamstime.com, Colorful fish © Topaz777 | Dreamstime.com, Koi fish © Pichest Boonpanchua | Dreamstime.com, Guppy fish © Sommai Sommai | Dreamstime.com, Swordtail fish © Mirkorosenau | Dreamstime.com, Molly fish © Mirkorosenau | Dreamstime.com, p.24 Marine underwater © Onyxprj | Dreamstime. com, p.25 iguana © Ifocus | Dreamstime.com, Wooden log © Jianghongyan | Dreamstime.com, Snake © Sasin Tipchai | Dreamstime.com, p.26 Turtle life cycle © Nattaya Makerd | Dreamstime.com, Crocodile © Johannes Gerhardus Swanepoel | Dreamstime.com, Turtle © | Dreamstime.com, Terrapin © Olga Popova | Dreamstime.com, p.27 Crocodile vector © Blue Ring Education Pte Ltd | Dreamstime.com, p.28 landscape © Filippo Romeo | Dreamstime.com, Owl © Ondřej Prosický | Dreamstime.com, p.29 Penguines © Willtu | Dreamstime.com, p.30 Hen © Anna1311 | Dreamstime.com, Eggs in hands © Ryzhov Sergey | Dreamstime.com, Ostrich © Coffeemill | Dreamstime.com, p.31 Parrot © Volodymyrkrasyuk | Dreamstime. com, Macaw © Isselee | Dreamstime.com, p.32 Giraffe © Maria Itina | Dreamstime.com, Bat © Farinoza | Dreamstime. com, Tree leaves © Pongsak Tiantad | Dreamstime.com, Dolphin © Cherdchai Chaivimol | Dreamstime.com, Grass base © Chumphon Whangchom | Dreamstime.com, Seal © Isselee | Dreamstime.com, water splash © Sittichai Karimpard | Dreamstime.com, p.33 Gorilla © Natalia Volkova | Dreamstime.com, Rabbits © Isselee | Dreamstime.com, p.34 Leopard © Simon Fletcher | Dreamstime.com, Leaves © Porstocker Kamalastbucha | Dreamstime.com, p.35 animals vector © Katerina Chumakova | Dreamstime.com, White fish © Chumphon Whangchom | Dreamstime.com, p.36 Fish diagram © Blueringmedia | Dreamstime.com, Scales © Svetlana Borokh - Dreamstime.com Chapter 3 p.38 Tomato seeds © Katharina Scharle | Shutterstock.com, Tomatoes isolated. Fresh cut tomato set isolated on white background with clipping path © Spalnic | Shutterstock.com, Pea sprouts germinating in soil © Bogdan Wankowicz | Shutterstock.com, Tomato plant with soil isolated on white background © M. Unal Ozmen | Shutterstock.com, p.39 Banana tree isolated with clipping paths for garden design.Economic crops of tropical countries are gaining popularity. The fruit that people around the world love to eat © Krumao | Shutterstock.com, p.41 Orchid plants are in pots in the greenhouse © kittiwat chaitoep | Shutterstock.com, p.42 Green leaf of Hibiscus; closeup on white background © Boonchuay1970 | Shutterstock.com, Realistic aloe vera vector illustration on white background © Star_O | Shutterstock.com, Banana Leaf © kowition | Shutterstock.com, Green coriander leaves close-up, isolation on a white background © Annaev | Shutterstock. com, Close up frond leaf fern isolated on white background in macro lens shooting © Sodel Vladyslav | Shutterstock.com, p.43 Magnified leaf stomata - schematic (opened and closed) © NoPainNoGain | Shutterstock.com, Summer branch with fresh green leaves © antart | Shutterstock.com, p.44 Sunflower © Dannyphoto80 | Dreamstime.com, p.45 wilted pot plant isolated on white background © humbak | Shutterstock.com, p.47 Watermelon plant growth stages from seed, seedling, sprout, flowering and ripe fruit on mature plant with roots © Andrii Bezvershenko |Dreamstime.com, p.48 Fresh tangerines and leaves isolated on white © Le Do | Shutterstock.com, Ripe red apple fruit with apple half and green apple leaf isolated on white background. Apples and leaf with clipping path © Roman Samokhin | Shutterstock.com, mango isolated on a white background © spaxiax | Shutterstock.com, Lychee. Fresh lychees isolated on white background © Subbotina Anna | Shutterstock.com, Mangosteen isolated on the white background .© Mr.Nakorn | Shutterstock.co, fresh longan with leaf isolated on white background.full depth of field © pukao | Shutterstock.com, Rambutan isolated on white with clipping path © Khumthong | Shutterstock.com, p.49 Annona muricata.Soursop fruit (Sugar Apple, custard apple) isolated on white background © Kyselova Inna | Shutterstock.com, whole and half of ripe papaya fruit with seeds isolated on white background © Boonchuay1970 | Shutterstock.com, p.49 Fresh watermelon and slices of watermelon isolated on white background. © Nyura | Shutterstock.com, p.50 Vector set of named nuts and seeds. Flat style. ©Colorcocktail | Shutterstock.com, Unpeeled sunflower seeds in bowl isolated on white background. Top view. © Jiri Hera | Shutterstock.com, The publisher would like to acknowledge the following who have kindly given permission for the use of copyright materials. Acknowledgements Acknowledgements 157 0005_Sci_TB_G2_Endlims.indd 157 5/14/2020 8:09:07 PM
pumpkin seed on white background © ake_anupap | Shutterstock.com, Hamster eating sunflower seeds © Elzbieta Monika Szatkowska - Dreamstime.com, p.52 Realistic vector magnifying glass © musicman | Shutterstock.com, bright large flowers and buds of red hibiscus isolated © t_korop | Shutterstock.com Chapter 4 p.54 Room © Galina Barskaya | Dreamstime.com, Teddy bear © Ovydyborets | Dreamstime.com, Blocks © Tatiana Galushkina | Dreamstime.com, Robot © Davinci | Dreamstime.com, Origami © Photka | Dreamstime.com, p.56 Cushion © John Kasawa | Dreamstime.com, Cup and saucer © László Nagy | Dreamstime.com, P.57 Toy truck © Asese | Dreamstime.com, p.58 Pencil © Eyewave | Dreamstime.com, Buttons © Rastko Belic | Dreamstime.com, Marbles © Seija Pekkarinen | Dreamstime.com, Scissors © Spetkovbs | Dreamstime.com, p.59 Plastic fork © Keerati | Dreamstime. com, Wooden table © Khanet Janngam | Dreamstime.com, Plastic tiffin © Satit Sae Tiw | Dreamstime.com, Metal fork © Lihui | Dreamstime.com, Metal can © Anny Ben | Dreamstime.com, P.60 Sand toy ID 31199495 © Juan Moyano | Dreamstime.com, Stole © Tombaky | Dreamstime.com, Glass bowl © Alexandr Kornienko | Dreamstime.com, Metal bottle © Zakalinka | Dreamstime.com, wooden box © Bigphoto | Dreamstime.com, P.61 Nail © Akinshin | Dreamstime.com, Coin purse © Pixelrobot | Dreamstime.com, Plastic glass © Bborriss | Dreamstime.com, Canvas bag © Gavran333 | Dreamstime. com, Cup © Vladimir Pogorelov | Dreamstime.com Chapter 5 p.63 Path © Vladimir Ovchinnikov | Dreamstime.com, House © Sergey Kelin | Dreamstime.com, p.67 Volcano © Anatolii Riabokon | Dreamstime.com, p.68 Pencil © Yury Shirokov | Dreamstime.com, Shoebox © Anton Starikov | Dreamstime.com, Rubber band © Alexan24 | Dreamstime.com, p.69 Fox © Jim Cumming | Dreamstime.com, Elephant © Johannes Gerhardus Swanepoel | Dreamstime.com, Grass Field © Henrik Stovring | Dreamstime.com, P.70 waves diagram © Lubushka | Dreamstime.com, Beach water waves © Biletskiy | Dreamstime.com, P.71 Cotton buds © Pleshko74 | Dreamstime.com, Cello Tape © Ilya Zaytsev | Dreamstime.com, P.72 Scissors © Oleksandr Bohza | Dreamstime.com, Balloon © Verdateo | Dreamstime.com, Rubber band single © Les Cunliffe | Dreamstime.com, Pencil © Liza Tkachuk | Dreamstime. com Chapter 6 p.74 Stones Background © Brainstormoff | Dreamstime.com, Stones Background 2 © Anthony Aneese Totah Jr | Dreamstime.com, p.75 Brick house © Richard Thomas | Dreamstime.com, Mountains © Vadim Nefedov | Dreamstime.com, River stone © Yuriykulik | Dreamstime.com, p.76 Boulder © Straystone | Dreamstime.com, Building © Volodymyr Kyrylyuk | Dreamstime.com, Park © Potatushkina | Dreamstime.com, Snow Mountains © Tanach Tamtarapat | Dreamstime.com, Base background © Onyxprj | Dreamstime.com, P.77 Blue stone © Vvoevale | Dreamstime.com, Grey Rock © Pannarai Nak-im | Dreamstime.com, Different stones © Viktor Bondariev | Dreamstime.com, P.78 Green stone © Vvoevale | Dreamstime. com, rock © Grigorii Ialukov | Dreamstime.com, Rough Rock © Pannarai Nak-im | Dreamstime.com, Pebble © Sabellopro | Dreamstime.com, P.79 Group of stones © Risus350 | Dreamstime.com, P.80 Stone benches © Suthon Thotham | Dreamstime.com, Building © Erix2005 | Dreamstime.com, Diamond Jewellery © Piman Khrutmuang | Dreamstime.com, Park/ lawn © Sebastian Czapnik | Dreamstime.com, Sapphires © Vithanage Buddhika Kalum Chinthana | Dreamstime.com, Rubies © Mariya Sentsova | Dreamstime.com, P.81 River vector © ActiveLines | Dreamstime.com, Jar © Blueringmedia |Dreamstime. com, P.82 Ores © Mohamed El-Jaouhari | Dreamstime.com, Base background © Onyxprj | Dreamstime.com, p.83 pebbles © Photka | Dreamstime.com, Sand © Thelightwriter | Dreamstime.com, Paper cup © Diana Ivanova | Dreamstime.com, Glue © Eshmadeva | Dreamstime.com Chapter 7 p.84 Terrace Lawn, railing © Bespaliy | Dreamstime.com, Balcony © Franciscah | Dreamstime.com, p.85 Constellation © Lillia | Dreamstime.com, Sun © Laurence Romaric | Dreamstime.com, Galaxy © Ievgenii Tryfonov | Dreamstime.com, p.87 Purple sky © Standret | Dreamstime.com, landscape © Arseniy Rogov | Dreamstime.com, Tree with snow © Siarhei Dzmitryienka | Dreamstime.com, Snow land © Siarhei Dzmitryienka | Dreamstime.com, p.88 Sun diagram © VectorMine | Dreamstime.com, p.89 Sky © Njmusik | Dreamstime.com, p.90 Day Sky © Patrick Barry | Dreamstime.com, Sun © Clearviewstock | Dreamstime.com, Earth © Skypixel | Dreamstime.com, Astronaut © ibreakstock|Dreamstime.com, Chapter 8 p.84 Terrace Lawn, railing © Bespaliy | Dreamstime.com, Balcony © Franciscah | Dreamstime.com, p.85 Constellation © Lillia | Dreamstime.com, Sun © Laurence Romaric | Dreamstime.com, Galaxy © Ievgenii Tryfonov | Dreamstime.com, p.87 Purple sky © Standret | Dreamstime.com, landscape © Arseniy Rogov | Dreamstime.com, Tree with snow © Siarhei Dzmitryienka | Dreamstime.com, Snow land © Siarhei Dzmitryienka | Dreamstime.com, p.88 Sun diagram © VectorMine | Dreamstime.com, p.89 Sky © Njmusik | Dreamstime.com, p.90 Day Sky © Patrick Barry | Dreamstime.com, Sun © Clearviewstock | Dreamstime.c Technology Strand: p.101 Clothes | Dreamstime.com, Sports clothes | Dreamstime.com, p.102 Black shoes | Dreamstime. com, Soccer shoes © Cookamoto | Dreamstime.com, p.106 Monitor © Gökhan Bartu Yüksel | Dreamstime.com, p.107 CPU © Esego | Dreamstime.com, Keyboard © Andrés Irrazabal Banacore | Dreamstime.com, Mouse © Tgellan | Dreamstime.com, p.108 CPU button © Eakkluk Aumaon | Dreamstime.com, Tablet © Glo5 | Dreamstime.com, p.112 Refridgerator © Maksym Yemelyanov | Dreamstime.com 158 Acknowledgements 0005_Sci_TB_G2_Endlims.indd 158 5/14/2020 8:09:07 PM
NOTES Notes 159 0005_Sci_TB_G2_Endlims.indd 159 5/14/2020 8:09:07 PM
NOTES 160 Notes 0005_Sci_TB_G2_Endlims.indd 160 5/14/2020 8:09:08 PM
NOTES Notes 161 0005_Sci_TB_G2_Endlims.indd 161 5/14/2020 8:09:08 PM
NOTES 162 Notes 0005_Sci_TB_G2_Endlims.indd 162 5/14/2020 8:09:08 PM