# Activities

• • • ##### Subject Area

• Math: Elementary Math: Math and Literature
• Math: Elementary Math: Geometry
• Math: Elementary Math: Measurement

• ##### Author K-5

60 Minutes

• ##### Device
• TI-10
• TI-15 Explorer™
• ##### Other Materials
This is Activity 3 from the EXPLORATIONS Book:
Uncovering Math with Manipulatives, the TI-10, and the TI-15 Explorer

The following materials are required for this activity:
• Ruler, string or measuring tape
• Butcher paper
• Scissors
• Containers, cubes, dice, marbles, counters, and balances
• Larger paper
• Pictures with enlarged reduced copies
• Protractors
• Pencils and markers
• String, compass, and caliper

## Measurement and Geometry

#### Activity Overview

Students explore the use of manipulatives to conduct simple geometry and measurement activities.

#### Before the Activity

• See the attached PDF file for detailed instructions for this activity
• Print student activity sheets for each separate section: Map It! pg 75, Only Half There? pg 79, No More Peas, Please! pg 83, Do Centimeters make Me Taller? pg 88, What's My Ratio? pg 92-93, Ratios in Regular Polygons pg 97-98, Predicting & pi; pg 102.

• #### During the Activity

Distribute the page to the class.

Map It!:

• Read a story, identify the locations of different places in the story, decide the distance between each set of places in the story, and create a map with a legend.

• Only Half There?:
• Use measuring tools and calculators to make half-sized drawings

• Use nonstandard units of volume and calculators to estimate the number of peas it would take to fill a room

• Do Centimeters Make Me Taller?:
• Use measuring tools and calculators to find pairs of measurements and form ratios
• Compare the ratios and make conclusions about using different units to measure lengths

• What's My Ratio?:
• Use linear measurement and calculators to investigate proportionality and determine the constant ratio between similar figures

• Ratios in Regular Polygons:
• Use linear measurement and calculators to investigate the ratios between corresponding parts of regular polygons

• Predicting & pi;:
• Use linear measurement and calculators to discover the existence of & pi;, the constant ratio between the circumference and the diameter of a circle
• #### After the Activity

• Review student results
• As a class, discuss questions that appeared to be more challenging
• Re-teach concepts as necessary