Stop the “I’m done, now what?” chorus for good with this full collection of high-engagement, algebraic substitution puzzles. This 8 mission bundle provides a bounty of enrichment, challenging students to move beyond simple arithmetic and dive into deep, deductive logic. Perfect for middle school math early finishers, these "Crack the Code" missions require students to use the substitution method to determine the numerical value of an entire alphabet (A-Z). Because this is a bundle, you have e