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Teaching Algebra with Manipulatives

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Chapter 12 <strong>Teaching</strong> Notes and Overview<br />

<strong>Algebra</strong> Activity<br />

Recording Sheet<br />

Testing Hypotheses<br />

(p. 296 of this booklet)<br />

Use With Lesson 12-9 as an extension activity.<br />

This corresponds to the activity on page 686 in<br />

the Student Edition.<br />

Objective Test a hypothesis to determine<br />

whether it is true or false using a five-step<br />

process.<br />

Materials<br />

ruler*<br />

clock<br />

* available in Overhead Manipulative Resources<br />

Go over the five-step process for testing a<br />

hypothesis. Then follow the process spelled out<br />

under Collect the Data. The hypothesis tested:<br />

People react to sound and touch at the same<br />

rate. Half of the class will investigate the time<br />

it takes to react when someone is told the ruler<br />

has dropped. The other half will measure the<br />

time it takes to react when the catcher is<br />

alerted by touch.<br />

Ask students to work in groups to complete<br />

Exercises 1–3. As soon as they complete these<br />

exercises, discuss the answers. Exercise 4 deals<br />

<strong>with</strong> designing an experiment to test a given<br />

hypothesis. They may need assistance.<br />

Emphasize the importance of following the fivestep<br />

process for testing a hypothesis. Have the<br />

groups share and exchange their findings.<br />

Answers<br />

See Teacher Wraparound Edition p. 686.<br />

© Glencoe/McGraw-Hill 290 <strong>Teaching</strong> <strong>Algebra</strong> <strong>with</strong> <strong>Manipulatives</strong>

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