Playlist: 3rd math
How Many Ways: Add to 170
Four blanks, ten digits, one target. Students hunt for every pair of two-digit numbers that adds to 170 without repeating a digit, then work out why there are only four.
Bad Graphs: Teacher Votes
One bar looks twice as tall, but the vote was nearly a tie. Students uncover the sneaky scale, then build their own misleading graph.
Broken Calculator: 2-Digit Addition
This calculator adds two-digit numbers wrong, the same way every time. Crack the rule, then predict its next mistake.
Broken Calculator: 2-Digit Subtraction
This calculator gets subtraction wrong the same way every time. Can your students crack its broken rule?
Back to School Math Worksheets
In these math problems, the solution is already given. But another number is missing!
Spring Math Worksheets: Multiplication and Division
Sets of multiplication and division practice problems. But the unknown isn’t where you expect it to be!
What’s In My Brain: Pentagon vs Pentagon
We’re looking at regular vs irregular polygons.
Measurement: How Big is this Bathtub?
So, if I told you a bathtub holds 640 of water, which unit would make the most sense?
Evens and Odds – Addition and Subtraction
When we’re adding and subtracting, do evens make odds into evens? Do odds make evens odd? Which one has… more power!?
What’s In My Brain: Trapezoids or Not?
Which are trapezoids and which are not?
How Many Ways: Times Equals Minus
How many different ways can you make this math statement true using only the digits one through nine?
How Many Ways: Times Equals Times
How many different ways can you make this math statement true using only the digits one through nine?
Grouping Quadrilaterals In A Hierarchy
Can we classify quadrilaterals like we classify living things?
Analyze and Create Misleading Graphs
Let’s make some intentionally bad graphs to learn how to spot poorly made graphs.
How Many Students Can Fit On The Playground?
So… just how many kids could we cram onto the playground?