University of Cambridge
University of Cambridge: Nrich: What's It Worth?
Use this one page website to practice the problem solving strategy of trial and error! The solution is available right at the website.
University of Cambridge
University of Cambridge: Nrich: Money Bags
Practice your problem solving skills while you help Ram figure out how many pennies to put in each bag. The solution is right on this one page website.
University of Cambridge
University of Cambridge: Nrich: Buckets of Thinking
Trial and error is just one of the problem solving strategies that you could use to solve this bucket problem. After you finish view the solution at this one page website.
University of Cambridge
University of Cambridge: Nrich: 1 to 8
Use the clues and problem solving strategy, trial and error, to solve this problem. When you have your solution you can check it right on this one page website.
National Council of Teachers of Mathematics
Nctm: Figure This: Keeping Cool
Is it better to by block ice or crushed ice? Use your logical reasoning and measurement skills to solve this challenge that compares surface area of block ice and the same block cut into three cubes. A one page activity from the NCTM...
Other
Websudoku
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...
Dartmouth College
Dartmouth College: Mqed: The Hand and the Key
The learning resource explores the mathematical riddles embedded in the walls of a palace.
University of Cambridge
University of Cambridge: Nrich: Cubes Within Cubes
On this one page website sharpen your logic, geometry, spatial thinking, and problem solving skills while working on this challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: Triangles to Tetrahedra
Given an unlimited number of a specific type of equilateral, isosceles, and right triangles create as many tetrahedra as are possible. Includes printout.
University of Cambridge
University of Cambridge: Nrich: Net Cuts
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.
University of Cambridge
University of Cambridge: Nrich: Konigsberg Plus
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.
National Council of Teachers of Mathematics
Nctm: Figure This: Gone Fishing (Pdf)
Use your algebraic reasoning to solve this math challenge that explores the relationship between quantities and weights. Try this math challenge from the NCTM Math Challenges for Families series. Also, discover how mastering this skill...
Texas Instruments
Texas Instruments: Numb3 Rs: The Missing City
Based off of the hit television show NUMB3RS, this lesson has students examine maps of a crime spree in order to figure out if any locations have been unreported. The lesson is not math-intensive and instead forces students to use...
Maths Challenge
Maths challenge.net: Children in a Circle
A "one star" geometry problem that requires problems solving skills where drawing a picture might help with the answer.
University of Cambridge
University of Cambridge: Nrich: A Conversation Piece
On this one page website sharpen your logic, division and prime number recognition skills while working on this challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: Bike Ride
On this one page website sharpen your logic and rate measurement skills while working on this challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: The Hare and the Tortoise
On this one page website sharpen your logic and rate measurement skills while working on this challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: More Christmas Boxes
Sharpen your logic and spatial reasoning skills while working on this challenge. Solution available.
University of Cambridge
University of Cambridge: Nrich: Walk and Ride
On this one page website sharpen your logic and rate measurement skills while working on this challenge. The solution is available to double check your solution.
Oswego City School District
Regents Exam Prep Center: Disjunction: Or
What is a "Disjunction"? What does "or" mean? This website answers these questions and provides examples of disjunctions used in mathematical sentences and problems.
University of Cambridge
University of Cambridge: Nrich: Where Are They?
Test your logic, polygon properties, and pattern recognition skills working on this challenge. Solution included.
University of Cambridge
University of Cambridge: Nrich: Transformations on a Pegboard
This one page website can expand your logic, Motion Geometry and pattern recognition knowledge. The solution is available to double check your answers.
University of Cambridge
University of Cambridge: Nrich: Daisy Game
Sharpen your problem solving and strategy skills by playing this interactive game. The game's rules are simple, but play requires some thinking if you want to beat the computer. You can change the settings and see if your strategy works...
University of Cambridge
University of Cambridge: Nrich: Making Boxes
Have fun and learn by making a box and then find out its maximum volume as well as other problem-solving activities, including making a table of your results and drawing a graph.
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