University of Cambridge
University of Cambridge: Nrich: Doplication
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.
University of Cambridge
University of Cambridge: Nrich: Fencing
On this one page website sharpen your logic, area, perimeter, and pattern recognition skills while working on this unique fencing challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: It Must Be 2000
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.
University of Cambridge
University of Cambridge: Nrich: It Figures!
Learn fraction multiplication with this fun tutorial.
University of Cambridge
University of Cambridge: Nrich: Ice Cream
Sharpen your logic and pattern creation skills performing this fun game. Includes solution.
University of Cambridge
University of Cambridge: Nrich: Gnomon 1
This interactive activity gives you an opportunity to explore a specific number pattern named the "Fibonacci sequence." See what other patterns you can discover while you manipulate the blocks. There is a "Printable Page" link if you...
University of Cambridge
University of Cambridge: Nrich: Sweets in a Box
Improve logic and pattern creation skills performing this game. Includes solution.
University of Cambridge
University of Cambridge: Nrich: Round and Round the Circle
Learn multiplication with this dial star exercise. Predict what shapes you will get with different numbers.
University of Cambridge
University of Cambridge: Nrich: Magic Squares
In a Magic Square all the rows, columns and diagonals add to the same number. This number is called the Magic Constant. Learn math fundamentals visually and have fun at the same time.
University of Cambridge
University of Cambridge: Nrich: Sticky Triangles
On this one page website sharpen your logic, table making, and pattern recognition skills while working on this triangle challenge. The solution is available to double check your solution.
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.
University of Cambridge
University of Cambridge: Nrich: Making Cuboids
How many different cuboids can you make? Learn how and learn how to represent data with your results.
University of Cambridge
University of Cambridge: Nrich: In a Box
This probability problem encourages the learner not only to arrive at a solution, but also to defend it.
University of Cambridge
University of Cambridge: Nrich: Heads and Feet
Solve this problem about hens and sheep and practice your algebraic thinking all at the same time. A solution is provided at this one page website.
University of Cambridge
University of Cambridge: Nrich: Diagonal Trace
Develop problem solving skills working with pentagons and then check your results.
University of Cambridge
University of Cambridge: Nrich: Page Numbers
Exactly 195 digits have been used to number the pages in a book. How many pages does the book have? Sounds simple enough--if you have the right problem-solving skills. Solution provided.
University of Cambridge
University of Cambridge: Nrich: Briefcase Lock
Use logic and reason to figure out what the correct combination of numbers are for the locked briefcase. At this one page website you can also check the solution.
University of Cambridge
University of Cambridge: Nrich: Largest Number
On this one page website sharpen your logic, multiplication, 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: Mind Reader
This series of operations always yields the same answer. Use your problem solving and algebraic skills and see if you can find the solution. When you have you can check the solution on this one page website.
University of Cambridge
University of Cambridge: Nrich: Whose Sandwich?
On this one page website logic and reason will help you figure out who ordered which sandwich. Check your results against the solution they provide at this website.
University of Cambridge
University of Cambridge: Nrich: How Many Eggs?
Use the clues at this one page website to figure out just how many chocolate eggs each child will receive. The solution is available when you figure it out.
University of Cambridge
University of Cambridge: Nrich: Highest and Lowest
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.
University of Cambridge
University of Cambridge: Nrich: Why 8?
On this one page website sharpen your logic and pattern recognition skills while working on this challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: Special 24
On this one page website sharpen your logic, square number, and problem solving skills while working on this challenge. The solution is available to double check your solution.