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A Peek Inside the Lesson
This is the real lesson text your child hears, read aloud by a friendly voice.
Matter Is Made of Particles
All matter is made of particles far too small to see.
Particles are always moving. In solids they jiggle; in liquids they slide; in gases they zoom.
When matter is heated, its particles move faster.
Measuring Matter
Mass is how much matter something has. We measure it in grams with a balance or scale.
Volume is how much space something takes up. We measure it in milliliters.
Temperature tells how hot or cold matter is.
Density: Float or Sink
Density is how tightly packed the matter in something is.
Things less dense than water float. Things more dense sink.
Liquids have density too: oil floats on water, and honey sinks!
