combine materials that when put together can do things that they cannot do by themselves such as building a tower or a bridge and justify the selection of those materials based on their physical properties.[2.5D] |
· Students should be given a variety of objects that they can use to build a structure with and then explain why they constructed it in the way that they did
· Allow students to talk about other pieces (shape, size, etc.) that would have been helpful to have and explain why
· Talk about any extra pieces that were not needed
· What are the physical properties of the unused pieces
· The pieces of a flashlight (battery, bulb, container, spring, etc) can be used as a demonstration
· The parts of a mechanical pencil or pen can be used as a demonstration
NOTE: This applies to anything that is a mixture of other things
Including:
• Physical properties of materials that help them do new things when combined to create something else
•Examples of systems / objects that are combination of items that do not function the same as if they were separated:
Brick walls without mortar
Lemonade without sugar
Cake without flour
Swings without the seat portion