Mathigon
Mathigon: Math Foundations: Grades 6 8
This is the electronic text for math foundations for grades 6-8. It is in the process of being rewritten so only specific sections are available now. More will be added over time.
Mangahigh
Mangahigh: Ice, Ice, Maybe: Fast Estimation With Basic Number Calculations
Practice your arithmetic skills as you estimate the answer to questions involving addition, subtraction, multiplication, and division. Includes whole numbers, fractions, and percents. As you answer questions, you guide penguins across an...
Other
Mathpower: Math Anxiety Self Test
Do you think you (or your students) might suffer from math anxiety? Taking this quick self test may help you answer the question.