Worksheet
Curated OER

Who Dun It?

For Students 9th - 12th
In this proofs by contradiction worksheet, high schoolers solve 1 word problem about a crime.  Students use proof by contradiction to determine the criminal in the word problem.
Worksheet
Curated OER

Brain Teaser

For Students 10th - 11th
In this statistics worksheet, students solve word problems using their probability and how many times an event may or may not occur. This worksheet contains 54 questions that are all word problems.
Website
Maths Challenge

Maths challenge.net: Problem Solving Database

For Teachers 9th - 10th Standards
Need some challenging problem-solving work for your students in the following areas: Discrete, Geometry, Numbers, and Code Breaking? This is the place for an enormous database of problems aimed at high school age students. They are...

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