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How can we protect a mountain town from falling rocks?

How can we protect a mountain town from falling rocks?

Lesson narration:
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If`a`rock`tumbles
slowly,`what`do`you
think`will`happen
if`it`bumps`into`a
tree?

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Now`say`it’s`moving
fast.`What`do`you
think`will`happen
if`it`bumps`into`a
tree?

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How`could`you
change`which`way
the`boulder`was
rolling,`so`that`it
wouldn’t`hit`the
house?

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push


1 of 4

to move an object away from you
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direction


2 of 4

the path an object takes as it moves
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experiment


3 of 4

a test used to discover new information about a question
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model


4 of 4

a pretend version of something that scientists use when the real thing is too big, small, or complicated to work with
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Lesson narration:

Activity Prep

Print Prep

In this lesson, students investigate how pushes can change the speed and direction of falling objects. In the activity, Boulder Bounce, students play a game where they design a solution that protects a model town called Tiny Town from a bouncing-ball “boulder.”

Preview activity

Exploration

17 mins

Wrap-Up

3 mins

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