Do molecules in a solid ever move?
You said the molecules in a solid are frozen still. They are never still: every particle vibrates, and heat changes how fast they shake.
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1 lesson for “States of matter and phase changes”
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Why does the Moon change shape?
You said Earth's shadow covers the Moon to make phases. A phase is only how much of the Moon's sunlit half is facing us.
Try this lessonIs acceleration just going fast?
You said a car cruising at 55 mph has lots of acceleration because it is fast. Constant speed on a straight road is zero acceleration.
Try this lessonIs it rise over run or run over rise?
Kai found the slope through (2, 3) and (6, 11) and wrote 1/2. He divided the run by the rise.
Try this lessonWhich number is the new price?
Zara found that 20% of $50 is $10 and handed me $10 as the new price. The $10 was the increase, not the result.
Try this lessonWhy can't you balance by changing H2O to H4O2?
Water is H2O, not H4O2. Learn how coefficients balance an equation without inventing new molecules.
Try this lessonWhy do I flip the second fraction?
Amara shared 1/2 of a sandwich into 2/3-sized portions and wrote 1/3. She multiplied by 2/3 instead of flipping it first.
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