Texas Instruments
Texas Instruments: Fractions Time Line
A number line showing equivalent fractions.
Illustrative Mathematics
Illustrative Mathematics: 3.nf Jon and Charlie's Run
The purpose of this task is to present students with a context where they need to explain why two simple fractions are equivalent and are most appropriate for instruction. Students can illustrate the fact that the two fractions are...
Discovery Education
Discovery Education: Web Math: K 8 Math
This WebMath site shows how to add, subtract, multiply and divide through a step by step examples. The user simple selects the operation and types in two numbers, and the computer solves the problem through a step by step process. Also...
Homeschool Math
Homeschool Math: The Concept of Mixed Numbers
Lesson shows the concept of a mixed number with the help of visual models and number lines.