Math Lessons
That Make Kids Think

Your students will hunt for patterns in prime numbers, debate whether a graph is misleading, and figure out what happens when you remove the hundreds place. Byrdseed.TV makes it happen without you spending your weekend building lessons.

Math Curiosity: Collatz Conjecture

The Collatz Conjecture: start with any number and get to 1 using just two rules. It seems to always work…

Gr 1-5

Analyze and Create Misleading Graphs

Let’s make some intentionally bad graphs to learn how to spot poorly made graphs.

Gr 3-7

The Game of 100

Who can get to 100 first in this simple, but delightful, math game?

Gr 2-7

Furnishing A Hotel

Design and furnish hotel rooms on a budget. Real math, real constraints, real decisions. Then pitch your hotel to investors.

Gr 4-7

A Visual Guide To Dividing By Fractions

Have you ever wondered what it looks like to divide by a fraction, man?

Gr 5

Deducing the Area of Triangles

Using patterns, students try to deduce where that area formula came from.

Gr 6

Math lessons and investigations that go way beyond practice problems. Students explore, conjecture, and justify.

Where to start on Byrdseed.TV

Want wow moments? Start with Math Curiosities — unsolved conjectures, fractals, and patterns students can’t stop thinking about.
Want real-world investigations? Browse Math Projects — stock prices, nutrition labels, cost of living.
Want number sense depth? Try Numbers and Operations and Fractions.
Want hands-on geometry? Explore Geometry and Measurement and Data.
Want games that build thinking? Try Math Games.

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I’m Ian Byrd. I co-wrote the book on Depth and Complexity with Lisa Van Gemert and I’ve been building D&C video lessons at Byrdseed.TV since 2009.

Math LessonsThat Make Kids Think

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Used by more than 10,000 teachers.

Math Lessons
That Make Kids Think