Task# Making 124

Illustrative MathematicsVaries

Not all students have seen base-ten blocks. This task should only be used with students who know what they are or have some on-hand to use themselves. Because this task asks students to explain how they know the list is complete, it aligns with Standard for Mathematical Practice 3 Construct viable arguments and critique the reasoning of others. A systematic approach to listing the solutions is not required to meet the standard, but it's a nice way for students to explain how they found all the possible ways to make 124 using base-ten blocks.