Logic Puzzles

Einstein’s Secret to Amazing Problem Solving (and 10 Specific Ways You Can Use It)

Problem Pictures

Problem Solving in Maths

Mathematical Digest (NZ)

Investigations, Puzzles and Other Problem Solving Activities

From Primary Resources (UK)


These are excellent Mathcounts-style problems for mastering concepts, but they are not actual Mathcounts competition rounds. See the Links section for actual Sprint Rounds, Target Rounds, etc. from past years.