### Have You Got It?

Can you explain the strategy for winning this game with any target?

### Yih or Luk Tsut K'i or Three Men's Morris

Some puzzles requiring no knowledge of knot theory, just a careful inspection of the patterns. A glimpse of the classification of knots and a little about prime knots, crossing numbers and knot arithmetic.

### Lambs and Tigers

Investigations based on an Indian game.

# Matching Fractions, Decimals and Percentages

### Why play this game?

This game can be played to improve students' recognition of equivalent fractions, decimals and percentages.

### Possible approach

There are three sets of printable cards, which you may find useful. Set A is the easiest, and set C is the hardest. Each half (top/bottom) is a stand alone set so you can combine these to form the size and difficulty that you would like.
For example, you might want to combine the bottom half of set A with the top half of set B, or all of set B with the top half of set C.

If you print double sided, then the cards will have an NRICH logo on the back. Otherwise, you can just print the first page.

Set A, Set B, Set C

Show students the game and turn over a few cards so they understand the object of the game. Then invite them to play the game on computers, or with the printed cards.

Bring the class together and ask for any tips or strategies that help with the game.

You could invite students to create their own sets of cards that they can share and use to play different versions of the game.

### Key questions

When you see 0.3, what are you thinking / looking for?
Which cards are easier/more difficult to match?

### Possible extension

Students can play the Fractions and Percentages Card Game where the card matching requires calculations.

### Possible support

Allow students to keep a record of the value of the cards that they have turned.