Playlist: Substitute Plans
Contig
Roll three dice and combine them using any mathematical operation. But be strategic to maximize your points!
Spring Math Worksheets: Multiplication and Division
Sets of multiplication and division practice problems. But the unknown isn’t where you expect it to be!
Investigating Population Changes
How have the ages of three countries’ populations changed from 1950 to 2020? And what problems might that create?
Fizz Buzz: A Counting and Divisibility Game
Ready for a tricky counting and divisibility game?
Calculators, Patterns, and Multiplying By Decimals
Before teaching students the procedure for multiplying with decimals, how much can they intuitively glean from a structured play session with calculators?
Rounding Numbers (But Not To 10)
What could we possibly do to make rounding more interesting for students who already get it? In this series, students consider how they might round to values other than “the nearest 10.” How, for example, do we round to the nearest 9? 7? 15?
Doubling Dollars
Say you have a dollar. Say you can double that dollar each day: $1, $2, $4, and so on. How long will it take to reach… one million dollars? Not as long as you might think!
A Donut Investigation
In this cross-curricular investigation, students will look into an intriguing question: do donuts or salads have more sugar? They’ll grapple with misleading information, bias, and use their math skills to create a visual representation of sugar in popular foods.
A Caffeine Investigation – Part 1
So… just how much caffeine can you have before you end up in the ER?
Analyze and Create Misleading Graphs
Let’s make some intentionally bad graphs to learn how to spot poorly made graphs.
Math Curiosity: Palindromic Number Conjecture
Using this one weird trick, it seems that you can turn any number into a palindrome!
Math Curiosity: Collatz Conjecture
The Collatz Conjecture: start with any number and get to 1 using just two rules. It seems to always work…