together flat shapes, such as squares and triangles. One shape they made was a fivesided pyramid made of five same-sized equilateral triangles. The bottom of such a shape is a pentagon! To get their…
Do you know why most globes are tilted on their stands? It’s because the earth is tilted. Because of this tilt, different places on earth get different amounts of sunlight. Special lines on globes…
Here are explanations and experiments concerning forces and machines; sound, light, heat, motion, and electricity; the six simple machines; and such everyday machines as clocks, cam¬eras, and engines.
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