Third graders investigate ratios and rates.  In this third grade mathematics lesson, 3rd graders identify equal ratios and rate and test for proportionality.  This lesson is created to be use in conjunctions with a particular...

Students look at ratio, what it means for numbers or objects to be in a given ratio, and how ratios and fractions are related. They write and solve story problems which involve whole numbers, using addition, subtraction, multiplication,...

Third graders discuss light sources and collect data about energy sources. They compare data and create a multiple line graph showing energy used by light sources for each student in the group. They present their graphs and write a...

Students explore the concept of perimeter. In this perimeter lesson, students discuss how to find perimeter of various shapes. Students use the Perimeter Explorer applet to find the perimeter of various shapes.

An interactive simulation that teaches about ratios, proportional reasoning, and unit rate by making predictions and testing proportions while designing a necklace, throwing balloons filled with paint, playing billiards, or shopping for...

This site contains a lesson about ratios and unit rates as well as guided and independent practice for students to review the skills.

This tutorial provides definitions and examples of ratios and proportions and features comparing ratios and converting rates.

A seventh-grade student is having trouble understanding ratios, fractions, and simplest form. Dr. Math to the rescue! Real-world, easy to grasp examples.