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This week, my students are tackling a puzzle that asks “What Symbol Comes Next?” Often this is referred to as the M Heart 8 puzzle since the first three symbols are similar to those shapes. My first experience with this puzzle happened years ago when a blog reader asked for my school’s mailing address so …

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The last time I taught Algebra 1, I used Step Puzzles by Naoki Inaba to introduce the idea of arithmetic sequences. I tweeted about it, but in the craziness of packing up my classroom and house to move last summer they never made it up on my blog. I was first introduced to the amazing …

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