Playlist: Bookmarks

Broken Calculator: 2-Digit Subtraction

This calculator gets subtraction wrong the same way every time. Can your students crack its broken rule?

What Happens to Your Luggage After Check-In

Tournament of Not-So-Famous Inventors

Which inventor and invention will win the tournament?

Letters With Symmetry

Let’s group letters by their symmetry, then create symmetrical words, and then symmetrical sentences!

Math Curiosity: Magic Triangles

Can you make each side of this triangle add up to 9 using the digits 1-6?

The Heaviest Pumpkin

How heavy is the world’s heaviest pumpkin when measured in Mr. Byrds?

An Olympic Sized Pool and 2 Liter Bottles (Episode 1)

How many 2 liter bottles could you fill up using the water in an olympic-sized pool?

How Many Will There Be? Earthworm

Give kids a taste of a sequence, let them build an understanding, and then see how far their predictions can take them.

Mow A Lawn

How long would it take to mow a very large lawn with a push-mower?

Fizz Buzz: A Counting and Divisibility Game

Ready for a tricky counting and divisibility game?

Ultimate (or Inception) Tic Tac Toe

What if each square on a Tic-Tac-Toe board had another Tic-Tac-Toe board inside of it?

Game: Number Scrabble

What if we played Tic-Tac-Toe with numbers and instead of three-in-a-row, we add up to 15? Well… then we’d have Number Scrabble!

Addition: 3 Digits Plus 2 Digits (Multiple Solutions)

Typical practice problems don’t move students up Bloom’s Taxonomy. With this framework, you’ll see kids stop and really think about how to approach multi-digit addition.

Same Perimeter, Different Area For Rectangles

Can two rectangles have the same perimeter but… different areas!?

Creating A Realistic Flower and Pollinator

Your students will create a new flower, designed to attract a specific pollinator.

Educational Valentines

Let’s make valentines with an educational twist!

Math Curiosity: Palindromic Number Conjecture

Using this one weird trick, it seems that you can turn any number into a palindrome!

A Grid-Based Fraction Project

You’ve got 60 spaces on a grid to create an amusement park, a house, a farm, or whatever you’d like. Divide it into seven pieces, order it by size, combine into two halves, and more in this fraction project.

Writing Clear Directions

Can you write directions so clear that a group of kids can put a toy together with no illustrations?