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Playlist: 4th Grade Math

How Many Ways: The Stubborn Ones Digit

Three fractions must add to exactly 1.07.

Measurement: How Old Is Mr. Byrd?

What if I told you that I’m 341,640 old? Could you figure out what unit I’m using? Hint: it’s not years!

Intersecting Angles and Streets

There can never be just one angle.

The Angles of a Triangle

Why tell a kid the rules of a triangle when they can discover them!?

Math Curiosity: Odds & Squares

Why does the sum of the first 5 odds also equal 5 squared?

Math Curiosity: Primes and Squares

Can any perfect square be written as the sum of two primes?