<html> <h3>If you produce something it means you make something - you are going to use different materials and your new product will have different properties from the materials you have used. </h3> <h3>You are doing something to each of these products, which means you are processing them. (make any type of change take place like mixing it, heating it or cutting it etc.)</h3> <p> <img src="https://imgoat.com/uploads/c8349cc726/44080.jpg" width="728" height="546"/></p> <p><a href="https://imgoat.com/uploads/c8349cc726/44080.jpg">image source</a></p> <p>Think of the materials as the ingredients you use to bake a cake - you are going to use flour, butter, milk, suger and eggs. Each of these ingredients have their own properties (something you can say about it), but once you combine them and bake it (processed it), it becomes a cake with totally different properties.</p> <h3>It works the same with materials - We process the materials (change it and combine it with other materials) to make it stronger or waterproof or to make it beautiful.</h3> <p><img src="https://imgoat.com/uploads/c8349cc726/44081.jpg" width="950" height="633"/></p> <p><a href="https://imgoat.com/uploads/c8349cc726/44081.jpg">image source</a></p> <p>If you combine materials by mixing them to form a new material or product, it is called <strong>mixtures.</strong></p> <ul> <li><em>Would you like to know more about mixtures for enrichment? Read the information on </em><a href="http://www.chem4kids.com/files/matter_mixture.html"><em>http://www.chem4kids.com/files/matter_mixture.html</em></a></li> </ul> <p>You can also watch the video explaining what a mixture is</p> <p>https://www.youtube.com/watch?v=WBWf1T4V7xE</p> <ul> <li><em><strong>Experiment on mixing materials</strong></em> -<em>You are going to make your own jelly. Read the instructions on the packet. Think of this - you are going to use water and the jelly powder and mix it together. The new product after it has cooled down is going to be jelly, with totally different properties than the ingredients you used</em></li> </ul> <p><img src="https://imgoat.com/uploads/c8349cc726/44082.jpg" width="800" height="472"/></p> <p><a href="https://imgoat.com/uploads/c8349cc726/44082.jpg">image source</a></p> <p>Another example of a mixture is when builders mix concrete and sand and water to produce cement which you can use to build a house with - it will set and become hard.</p> <p>We added certain materials to others to make it stronger and this is called <strong>reinforcing </strong>the material. If you build sand castles on the beach they are not going to be as strong as the house that you have added the cement - the sand and cement mixed together, made a reinforced (stronger) product. </p> <p>If they have to build high buildings and make the concrete even stronger, they will add steel rods in the concrete to reinforce it even more.</p> <p><img src="https://imgoat.com/uploads/c8349cc726/44083.jpg" width="957" height="1300"/></p> <p><a href="https://imgoat.com/uploads/c8349cc726/44083.jpg">image source</a></p> <p>Learn some interesting facts about concrete on<a href="http://sciencewithkids.com/science-facts/facts-about-concrete.html"> http://sciencewithkids.com/science-facts/facts-about-concrete.html</a></p> <h2>Cooking and mixing different foods</h2> <p>Cooking food is also a way of producing new materials/products (remember the example of the cake?)</p> <p>If you put an egg in a pan, the white of the egg is transparent, but once the egg is baked, the white of the egg is more solid and turned white in colour.</p> <p> <img src="https://imgoat.com/uploads/c8349cc726/44084.jpg" width="259" height="194"/></p> <p><a href="https://imgoat.com/uploads/c8349cc726/44084.jpg">image source</a></p> <p>Even though we did not add a different material, the egg was still processed by adding heat. </p> <p>Materials can be processed and new materials created by adding other materials or adding heat or taking away heat. If anything is done to the original material, we say it has been processed.</p> <p> <img src="https://imgoat.com/uploads/c8349cc726/44079.jpg" width="562" height="240"/></p> <p><a href="https://imgoat.com/uploads/c8349cc726/44079.jpg">image source</a></p> <p>Processing of materials take place in our houses when we cut or cook food and also in factories. The raw material (the material from nature) is transported to the factory where it is processed and another product or material is made.</p> <p>Have a look at the processes wheat goes through to be made into bread</p> <p>https://www.youtube.com/watch?v=ae_OBMFkaEA</p> <ul> <li><em><strong>Lets have some fun</strong></em> - <em>you can process your own materials and turn it into bread - read the recipe and bake your own bread and as you go along, think about how you are mixing and adding materials together to turn it into a new material/product. </em><a href="https://rainydaymum.co.uk/easy-bread-dough-cooking-with-kids/"><em> https://rainydaymum.co.uk/easy-bread-dough-cooking-with-kids/</em></a></li> </ul> <p> <img src="https://imgoat.com/uploads/c8349cc726/44085.gif" width="379" height="120"/></p> <p>http://i.imgur.com/a0vQdRk.png</p> <p>Team South Africa banner designed by @bearone</p> </html>
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Excellent explanation thank you for sharing this, kids will really understand.
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Thank you for the kind words
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https://imgoat.com/uploads/4173cb38f0/29566.jpg
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as a former educator, I appreciate clarity. This was very well done, anneke
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Thank you so much . Yes I always say I am too straight forward to use big words hahaha. I like it when my kids know what I am saying, and not me just filling time with words
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A great article on mixtures and processing. It is good for children to understand the difference between pure substances and mixtures. I like the cook analogy. You are a good science teacher by giving understanding to the lesson plan by using things that are more familiar to children. Great job! :D
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Another great post! Well done!
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