Certex Recipe (counting, pattern)

Certex Recipe (counting, pattern)

Vertex Recipe (Jeremiah Hockaday, 2025) Which vertex recipes work and which fail? Look for patterns. The conversation continues below about why graph theory should be considered when designing curriculum.   Do these fail? {1,2,3} {1,2,3,4} {1,2,3,4,5}...
Roll Reversal (counting, addition, manipulatives)

Roll Reversal (counting, addition, manipulatives)

Can you figure out the rules for Roll Reversal by just looking at this sample? We’ll explain the rules on the next few pages, but sometimes it’s fun to get your students to flex their inductive problem-solving muscles! We are going to use Cuisenaire rods....
Fussy Friend Graphs

Fussy Friend Graphs

Can you figure out the rules for fussy friend graphs just by looking at an example of a failure due to a fussy friend? The “4” is a fussy friend. This graph failed because the edges connecting “4” to other friends do not add up exactly to 4. To...
Arrows Everywhere! (addition)

Arrows Everywhere! (addition)

Arrows Everywhere! (MathPickle, 2025) Here are the grids you’ll need to play this puzzle on paper, but if you happen to have a square tiled flooring in your school – watch the video below and use the big arrows that you’ll also find in that pdf....
Steamrolled! (addition or algebra)

Steamrolled! (addition or algebra)

Steamrolled! (MathPickle, 2025) If you are in grades 1-3, all you need is addition and good thinking. If you are in junior high, you can use algebra to tackle more difficult steamrolled puzzles. Make your own or try to solve mine here.   Teaching is an...