Teachers, this is the place to come for fraction lesson plans if you teach elementary young scholars. All the topics have a number of resources available from which to choose.

Features steps on how to add and subtract fractions with the same denominator.

Add and subtract proper and improper fractions with this calculator and see the work involved in the solution.

Estimate sums and differences for positive proper fractions, n/d (numerator/denominator). Use rounding to estimate answers when adding or subtracting proper fractions.

In this interactive, use logic to solve riddles involving a jumping frog contest. Add two consecutive jumps by one frog and place the jumps on the number line, finding equivalent fractions with common denominators to do so. Numbers are...

A wealth of resources to help you in planning classroom instruction on rational expressions: lesson plans offer guidelines for and examples of simplifying, adding and subtracting, multiplying and dividing rational expressions; practice...

Gain an understanding of how to add or subtract polynomials by viewing an example and a video lesson.

Rock out to a musical demonstration of math involved in constructing rhythms from groups of beats in this video from KQED. In the accompanying classroom activity, students consider how the note durations comprising a measure in 3/4 time...