- Facts to 20 - A Math Dominoes Game for Addition Fact Practice - The first written reference to a set of domino tiles is recorded in 12 Century Chinese writing. The game is thought to have been brought to Europe along the trade routes. Dominoes first appeared in Italy in the 1850s and quickly spread throughout Europe then to the rest of the world.
What You Need
1 Deck of Friends to 20 Domino Cards
How to Play
1. The student with the next birthday becomes the dealer.
2. Dealer shuffles the cards and gives 5 cards to Player 2 and 5 cards to them-self.
3. Place the remaining card in the center of the playing surface face up.
4. Players hold their cards so the opponent cannot see them.
6. Take turns to place cards at either end of the domino card on the table so the numbers touching total 20.
7. If a player is unable to play any of the cards in their hand, they pass
How to Win
- The player who plays the last card in their hand has to say 'domino' and is the winner.
Before the Game
- Discuss the need for efficient mental strategies in maths.
- Discuss how 'Adding with your fingers is accurate but very slow'.
- Discuss, demonstrate, model and explore how using 'Facts to Ten' strategies and then 'transfer' this knowledge to facts to 20.(Most students see the pattern very quickly but it is not obvious for some learners. It has to be spelt out).
- Model appropriate self talk e.g. '16 + something = 20' ----> Oh this is one of those answers I know just by looking at it. It's 4'.
- '14 + what = 20' ----> 'Hmmm, 6 + 4 is 10 so 14 + 6 must be 20'
- Explore students' current knowledge - 'How did you get your answer?'
- Explain to me how you did that.
- Is there a different strategy which is efficient / quick and always works?
- Discuss – ‘ The algorithms you have to think about for a while are the ones you need to commit to memory. Let's see if we can find the ones you need to work on’.
Monitor the Play - Walk between games taking notes on who has NOT achieved automatic recall of facts.
- Ask lots of questions and make observations - I noticed you took a little while to get the answer to that algorithm. Can you explain to me how you arrived at your answer?
- Is that a fact you need to commit to memory.
- The algorithms you have to think about for a while are the ones you need to commit to memory. Write down the three you need to work on before we play this game tomorrow.
- Discuss how they went and where they can make improvements.
- Is the game too hard, too easy or just where you need to be working?
- Once the students have mastered the facts to 20 as a group design and test a domino game that reinforces the facts to 30.
- assign groups to make the next sets i.e. facts to 40, 50, 60, 70, 80, 90, 100 etc.
- Students play each others’ games.
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