Content atlas · Bridges in Mathematics third-edition

September: Calendar Collector

Layer a Day

4 published problems

1. Steve’s Big Dig — Measure Steve’s cube-shaped dig and make sense of the amount of coal expected inside.
2. Jules's Nested Workshop Note — Build one Workshop story into larger and larger numerical equations, then repair an almost-right expression.
3. Steve’s Chestful Challenge — Use a real Minecraft chest, 64-block stacks, and cube dimensions to prove a surprising volume match and plan a hollow build.
4. Make the Calculation Plan Visible — Students evaluate a plain expression, then make one version that follows a calculation plan by inserting one pair each of parentheses, brackets, and braces.