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Make a cube out of straws and have a go at this practical challenge.


Reasoning about the number of matches needed to build squares that share their sides.

Little Boxes

How many different cuboids can you make when you use four CDs or DVDs? How about using five, then six?

World of Tan 2 - Little Ming

Age 7 to 11
Challenge Level

World of Tan began with World of Tan 1 - Granma T.

Little Ming


I'm Little Ming, I'm here with my sister Little Fung. I am 11 years old, and I was born in the Year of the Dragon. Little Fung is one year younger, born in the Year of the Snake. We spend a lot of time helping Granma T with her business. She says we 'hinder' rather than 'help' her, but we disagree!

Last week we told her that when she makes deliveries to four different stores, the journey can be done in 24 different ways! I don't think she believed us.

Can you complete my silhouette and that of Little Fung? Use the interactivities below.

Extra activities:

  • Find out more about Chinese years and which different animals these were named after. What year could Little Ming have been born in? What about Little Fung?
  • Imagine that Granma T wants to deliver to four different shops. Make up some names for the four shops, and write down what order she could visit them in. Can you find 24 different orders that she could visit them in? What about if there were three shops? Or five shops?

Printable NRICH Roadshow resource.

The story continues in World of Tan 3 - Mah Ling.