K8 Math Sense

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K8 Math Sense Are you looking for math resources for K-8 to promote math sense? Find ideas and links.

This page is guided by Angie Seltzer, who has been a math curriculum specialist for more than 30 years. She offers information to help teachers, students, and parents make sense of math.

Today is 9-2-5. So, see the first two comments for a free 4-question middle school math activity to celebrate Dolly Part...
09/25/2026

Today is 9-2-5. So, see the first two comments for a free 4-question middle school math activity to celebrate Dolly Parton.

This can be simplified to use with middle school students. Ask them to calculate 1 cubed + 2 cubed + 3 cubed. Is the ans...
03/25/2026

This can be simplified to use with middle school students. Ask them to calculate 1 cubed + 2 cubed + 3 cubed. Is the answer a perfect square number? Then have them add on 4 cubed to the result, then 5 cubed. Have them look for a pattern.

A beautiful identity in mathematics:
The sum of the first n cubes forms a perfect square.
1³ + 2³ + 3³ + ... + n³ = (1 + 2 + 3 + ... + n)²
In other words, add up the cubes… and you get the square of the triangular number.

Saturday is PI DAY! Try a FREE printable card game.
03/09/2026

Saturday is PI DAY! Try a FREE printable card game.

These FREE cards show models and expressions for area and circumference of circles, fun for Pi Day or a review anytime. Kids can match them in math stations or centers, or play four engaging games. You may also want to view the "Playing Around with Pi" Bundle that has been featured by TpT. If you wa...

Wishing you, your family, and your students good health and happiness in 2026!
01/01/2026

Wishing you, your family, and your students good health and happiness in 2026!

12/25/2025
Here's a fun holiday review activity for middle school students. See more detail in comments.
12/10/2025

Here's a fun holiday review activity for middle school students. See more detail in comments.

Ready for a change of pace for elementary grades? Get the link to the cards games in the first comment.
12/10/2025

Ready for a change of pace for elementary grades? Get the link to the cards games in the first comment.

08/28/2025

Here's a neat geometry craft idea.

Last chance! Save 25% today on all games and PowerPoint activities in my store at TeachersPayTeachers. See link in comme...
08/06/2025

Last chance! Save 25% today on all games and PowerPoint activities in my store at TeachersPayTeachers. See link in comments.

08/04/2025

A recent review: "My students loved this resource. It kept them engaged while learning."

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