University of Cambridge
University of Cambridge: Nrich: Reach 100
This one page website offers a challenge that will require you to use your problem solving skills. The solution is available right at the website.
University of Cambridge
University of Cambridge: Nrich: Back to the Planet of Vuv
You will probably need to make a list to solve the challenge at this one page website.
University of Cambridge
University of Cambridge: Nrich: Alphabet Blocks
Help Santa and the elves keep track of how many blocks they need for their alphabet blocks. Solution provided.
University of Cambridge
University of Cambridge: Nrich: What Shape and Color?
Fill in the chart and see which shapes and which colors belong in which rows and columns. The solution is readily available at this one page website.