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Epsilones: Problemas Pi

For Students 9th - 10th Standards
Use logic or your knowledge of mathematics to solve this collection of math problems. Solutions are provided. [In Spanish]
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 7.rp Proportionality

For Teachers 7th Standards
This lesson plan explores how to recognize and represent proportional relationships between quantities.
Unit Plan
TED Talks

Ted: Ted Ed: Can You Solve the Temple Riddle?

For Students 9th - 10th
Your expedition finally stands at the heart of the ancient temple. But as you study the inscriptions in the darkness, two wisps of green smoke burst forth. The walls begin to shake. The giant sandglass begins flowing with less than an...
Activity
Oswego City School District

Regents Exam Prep Center: Conjunction: And

For Students 3rd - 8th
Learn what a conjunction is and why it is important to know what a conjunction is when using logic to solve mathematical problems. This website includes examples of the conjunction "and" used in mathematical sentences and a "truth table."
Activity
University of Cambridge

University of Cambridge: Nrich: Make 37

For Students Pre-K - 1st Standards
Sharpen your logic and addition skills while working on this challenge. Solution.
Activity
Maths Challenge

Maths challenge.net: Children in a Circle

For Students 3rd - 6th
A "one star" geometry problem that requires problems solving skills where drawing a picture might help with the answer.
Whiteboard
ClassFlow

Class Flow: Congruence in Triangles

For Teachers 9th - 10th Standards
[Free Registration/Login Required] This lesson helps teach congrence in triangles. Includes practice with postulates, theorems, and logical reasoning.
Website
Mensa Espana

Mensa Espana: Lista De Problemas

For Students 9th - 10th
Spanish content. An extensive compilation of logic and reasoning problems approved by MENSA. Problems are arranged according to difficulty. Each problem is linked to it's solution. A terrific resource for extention and supplemental...
Interactive
University of Cambridge

University of Cambridge: Nrich: Game: Tandem

For Students Pre-K - 1st
Sharpen your problem solving and strategy skills playing this game. There is a "printable page" link if you want to print it out to help you work with the problem.
Activity
University of Cambridge

University of Cambridge: Nrich: A Conversation Piece

For Students 3rd - 8th Standards
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.
Activity
University of Cambridge

University of Cambridge: Nrich: Bike Ride

For Students 3rd - 8th Standards
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.
Activity
University of Cambridge

University of Cambridge: Nrich: The Hare and the Tortoise

For Students 3rd - 8th Standards
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.
Activity
University of Cambridge

University of Cambridge: Nrich: Walk and Ride

For Students 3rd - 8th Standards
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.
Interactive
University of Cambridge

University of Cambridge: Nrich: Game Pumpkin Patch

For Students Pre-K - 1st
Sharpen your problem solving and strategy skills playing this Somali game, Pumpkin Patch. The rules are simple but the game requires some thinking. There is a "Get Printable Page," link at the top to print out the materials you need.
Activity
University of Cambridge

University of Cambridge: Nrich: Hand Span

For Students 3rd - 5th
Use this one page website to practice measuring things using nonstandard units of measurement. There is a solutions page that is right at the website for more information.
Interactive
University of Cambridge

University of Cambridge: Nrich: Game Khun Phaen Escapes to Freedom

For Students Pre-K - 1st
This interactive game is based on a famous character in a Thai legend. See if you can figure out how he escaped! You will have to use your problem solving and spatial relationship skills to figure out this one.
Activity
University of Cambridge

University of Cambridge: Nrich: Eleven?

For Students 3rd - 8th
Only by replacing these letters with the correct digits can you make this problem add up correctly! The solution is located right at this one page website.
Activity
University of Cambridge

University of Cambridge: Nrich: Magic Triangle

For Students 3rd - 8th
Use your problems solving skills to make everything add up correctly for this challenge. The solution is right at this one page website.
Activity
University of Cambridge

University of Cambridge: Nrich: Butterfly Flowers

For Students K - 1st
This one page website offers a challenge that will require you to use your problem solving skills. There are teacher tips and the solution available to help.
Activity
University of Cambridge

University of Cambridge: Nrich: Magic Circles

For Students 3rd - 8th Standards
Use your problem solving skills to figure out this challenge. A number of solutions are available right at this one page website.
Interactive
University of Cambridge

University of Cambridge: Nrich: Two Stones Game

For Students Pre-K - 1st
Sharpen your problem-solving and strategy skills while playing the interactive game, Two Stones. The rules are simple, but the game requires some thinking if you want to beat the computer. Watch as the play proceeds to see what it takes...
Interactive
University of Cambridge

University of Cambridge: Nrich: Game Counter Roundup

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

University of Cambridge: Nrich: Number Juggle

For Students 3rd - 8th
Use those problem solving skills to find a solution to this triangle problem. When you have your solution you can check it right on this one page website.
Interactive
University of Cambridge

University of Cambridge: Nrich: Daisy Game

For Students Pre-K - 1st
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...

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