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Structures

Structures. A structure is something that humans and animals build to be strong and stable. We also build structures to keep out the forces of nature, such as wind, rain and snow. Houses, bridges, tunnels, stores, and schools are all types of structures.

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Structures

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  1. Structures

  2. A structure is something that humans and animals build to be strong and stable. We also build structures to keep out the forces of nature, such as wind, rain and snow.

  3. Houses, bridges, tunnels, stores, and schools are all types of structures. These structures provide shelter and safety.

  4. Bikes, trains, buses and planes are structures too. These structures help us to travel.

  5. StableStructures (Stability)

  6. Structures that are stable are not likely to fall down or break when forces are applied to them. more stable less stable

  7. Which stack of books looks the most stable? Why do you think so? A. B.

  8. Have you ever tried to ride a bike? Your bike was probably very unstable. You may have fallen many times! How can you make a bike more stable, so that it is easier to ride?

  9. An adult can hold on to you so that you don’t fall over. You can put extra wheels on the sides of your bike. These are called training wheels.

  10. Think of the story of the Three Little Pigs. Which houses blew down? Why?

  11. Look at the following structures. Why do you think it is important that they are stable?

  12. The C.N. Tower

  13. A chair

  14. A ladder

  15. Strong Structures (Strength)

  16. Structures must be strong so that they can hold weight and not change their shape.

  17. Do you think one piece of paper rolled in a cylinder is strong enough to balance a math book?Let’s see!

  18. These children are jumping on a bed.If the bed was not strong, it would break. The children could get very hurt.

  19. Cars drive over bridges to cross water. What could happen if this structure was not strong?

  20. What could happen if this house was not strong enough to hold the snow on the roof?

  21. Look at the following structures. Why do you think it is important that they are strong?

  22. couchsofa

  23. bird nest

  24. roller coaster track

  25. stairs

  26. To make structures strong and stable, builders often use one special shape… http://www.pbs.org/wgbh/buildingbig/lab/shapes.html Can you guess what the special shape is?

  27. Do you think an egg is strong enough to hold a math book?Watch as Miss King tests it out…

  28. YES! An egg CAN hold a math book! Three eggs arranged in a triangle are even stronger! Watch as we test this out…

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