Postscript items are designed as rich grab-and-go resources that any teacher can quickly incorporate into his or her classroom repertoire with little effort and maximum impact. Start the school year right: Build on students' love for doubling by introducing exponential growth with this strategic bingo game.

Supplementary Materials

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Contributor Notes

James Russo is a primary-grades school teacher at Belgrave South Primary in Victoria, Australia. He is also a PhD candidate at Monash University. His teaching passion is for developing engaging games and activities that extend student thinking.

Edited by Theodore (Teddy) Chao,, an assistant professor of mathematics education at The Ohio State University in Columbus; and Imani Goffney,, an assistant professor at the University of Houston. Submit your quick game, puzzle, activity, or instructional strategy along with suggestions for how teachers of different grade bands (K–1, 2–3, 4–6) can use this idea. Send submissions of no more than 250 words to this department by accessing See detailed submission guidelines for all departments at

(Corresponding author is Chao
Teaching Children Mathematics


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