Activity
University of Cambridge

University of Cambridge: Nrich: Penta Place

For Students Pre-K - 1st
Sharpen your logic and pattern recognition skills while working on this challenge. Solution included.
Activity
University of Cambridge

University of Cambridge: Nrich: Sometimes We Lose Things!

For Students 3rd - 8th
On this one page website sharpen your logic, base nine, and pattern recognition skills while working on this challenge. The solution is available to double check your solution.
Activity
University of Cambridge

University of Cambridge: Nrich: Routes 1 and 5

For Students 3rd - 8th Standards
Sharpen your logic and basic arithmetic skills while working on this challenge. Solution.
Activity
University of Cambridge

University of Cambridge: Nrich: Two Primes Make One Square

For Students 3rd - 8th
On this one page website sharpen your logic, prime numbers and square numbers skills while working on this challenge. The solution is available to double check your solution.
Activity
University of Cambridge

University of Cambridge: Nrich: Adding Triangles

For Students 3rd - 8th
Sharpen your logic and geometry skills by finding the area of a triangle. Solution available.
Activity
University of Cambridge

University of Cambridge: Nrich: Big Dog, Little Dog

For Students Pre-K - 1st Standards
On this one page website sharpen your logic and problem solving skills while working on this challenge. The solution is available to double check your solution.
Activity
University of Cambridge

University of Cambridge: Nrich: A Square Deal

For Students 3rd - 8th Standards
On this one page website sharpen your logic, ordered pairs, and pattern recognition skills while working on this challenge. The solution is available to double check your solution.
Activity
University of Cambridge

University of Cambridge: Nrich: Counting Cards

For Students Pre-K - 1st Standards
On this one page website sharpen your logic and factor skills while working on this challenge. The solution is available to double check your solution.
Activity
University of Cambridge

University of Cambridge: Nrich: Grouping Goodies

For Students Pre-K - 1st Standards
On this one page website sharpen your logic and factor skills while working on this challenge. The solution is available to double check your solution.
Activity
University of Cambridge

University of Cambridge: Nrich: What's Left?

For Students 3rd - 5th
On this one page website sharpen your logic and factor recognition skills while working on this challenge. The solution is available to double check your solution.
Activity
University of Cambridge

University of Cambridge: Nrich: Trick or Treat

For Students 3rd - 5th
On this one page website sharpen your logic, graphing and pattern recognition skills while working on this challenge. The solution is available to double check your solution.
Activity
University of Cambridge

University of Cambridge: Nrich: Train Carriages

For Students K - 1st Standards
On this one page website sharpen your logic and pattern creation skills while working on this challenge. The solution is available to double check your solution.
Activity
University of Cambridge

University of Cambridge: Nrich: It Must Be 2000

For Students 3rd - 8th Standards
On this one page website sharpen your logic and pattern extension skills while working on this challenge. The solution is available to double check your solution.
Activity
University of Cambridge

University of Cambridge: Nrich: Arranging the Tables

For Students 3rd - 5th
On this one page website sharpen your logic and problem solving skills while working on this challenge. The solution is available to double check your solution.
Activity
University of Cambridge

University of Cambridge: Nrich: Good Work if You Can Get It

For Students 3rd - 8th Standards
On this one page website sharpen your logic and problem solving skills while working on this challenge. The solution is available to double check your solution.
Interactive
University of Cambridge

University of Cambridge: Nrich: Game Fifteen

For Students 1st - 5th
Sharpen your problem solving and strategy skills playing this interactive game, Fifteen. The rules are simple but the game requires some thinking if you want to beat the computer. There is a "Printable Page," link if you want to print it...
Activity
University of Cambridge

University of Cambridge: Nrich: Find the Fake

For Students 3rd - 8th
Find the fake bar of gold in this problem and you are only allowed to use the scale twice. Can you do it? Once you have your solution check this one page website to verify it.
Activity
University of Cambridge

University of Cambridge: Nrich: Three Way Mix Up

For Students 3rd - 8th
Follow the rules and see if you can solve this problem about 3 different color tile arrangements. As always the solutions is available on this one page website.
Activity
National Council of Teachers of Mathematics

Nctm: Figure This: The Race [Pdf]

For Students 3rd - 8th Standards
A challenge that combines skills in problem solving and logical reasoning. See if you can figure out who will win the race by determining the rate of speed of each runner. A one page activity from NCTM Math Challenges for Families...
Activity
National Council of Teachers of Mathematics

Nctm: Figure This: Tan, Don't Burn

For Students 3rd - 8th
How about a math challenge for a sunny day at the beach? Apply your problem solving, number sense, and logical reasoning skills to find out how long it would take Helix to get sunburned using SPF 10 lotion. Discover why understanding...
Interactive
Other

Websudoku

For Students 9th - 10th Standards
A fun puzzler to get any mind thinking logically! Try many levels of puzzles using the following rules: "Enter digits from 1 to 9 into the blank spaces. Every row must contain one of each digit. So must every column, as must every 3x3...
Activity
University of Cambridge

University of Cambridge: Nrich: Triangles to Tetrahedra

For Students 3rd - 8th Standards
Given an unlimited number of a specific type of equilateral, isosceles, and right triangles create as many tetrahedra as are possible. Includes printout.
Interactive
University of Cambridge

University of Cambridge: Nrich: Net Cuts

For Students 3rd - 5th Standards
In this enrichment game, the nets for nine solids are displayed. The twist is that each net has been cut into two pieces. The challenge is find the pieces that go together.
Activity
University of Cambridge

University of Cambridge: Nrich: Konigsberg Plus

For Students 9th - 10th
See if you can solve this classic problem that Leonhard Euler first presented in 1736. Use the interactive section of this website to help you.

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