Open Middle - Challenging math problems worth solving
Directions: Fill in the blanks with whole numbers 0 through 9, using each number at most once, such that it creates a quadrilateral with an area of 16 square
open middle, robert kaplinsky, nanette johnson, dan meyer, mathematics, math, maths, problem, problems, conceptual, conceptual understanding, procedural skill, ccss, common core, common core state standards, common core standards, depth of knowledge, dok,
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