This math lesson from Illuminations introduces students to the various costs associated with owning a car. The material uses proportion to calculate distance and miles per gallon, as well as analyzing data using a...

This simulation provides practice on estimation of relative sizes. The user must estimate the relative lengths, areas, or volumes of objects. This activity builds student abilities to understand ratios and the scaling of...

This site provides a PowerPoint presentation, created by Dr. Elizabeth Garrett-Mayer of Johns Hopkins University, of a lesson and examples of point estimation, odds ratios, hazard ratios, risk differences and precision....

Math Power is a site created by Professor Freedman, a highly acclaimed teacher of basic mathematics. She has several resources to help students of all ages learn pre-algebra and elementary algebra skills. Many sample...

In this learning object from Wisc-Online, students will examine ratios and proportions. The unit's activities include defining ratios and proportions, simplifying ratios, solving problems using proportions and answering...