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Worksheet
Curated OER

The Alien Invaders: Math Detective

For Students 2nd - 3rd
In this math detective worksheet, students cut apart and assemble a small 24 page book about alien invaders. Students go page by page, solving the math problems and skipping to the specified pages depending on their answers. If students...
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Worksheet
Curated OER

Guess Again!

For Students 3rd - 4th
In this number sense worksheet, students solve 8 story problems in which clues are given for the ages of a group of people. Students figure out the age of each person in the story.
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Website
Other

Problems in the Points Contest of Ko Mal

For Students 9th - 10th
Learn about the annual KoMal competition in mathematics, physics, and information technology, and challenge your ability to solve problems involving advanced algebra, logic, and other related topics through the tests provided at this site.
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Activity
Braingle

Braingle: Probability Brain Teasers

For Students 9th - 10th
Check out the variety of probability brain teasers at this site, which you can sort by popularity and difficulty.
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Activity
Braingle

Braingle: Math Brain Teasers

For Students 9th - 10th
Check out the variety of math brain teasers at this site, which you can sort by popularity and difficulty.