Mathematics @ ENPS
Year Three Additive Thinking
Connection to the Mathematics Curriculum 2.0: Applies additive strategies to model and solve problems involving two- and three-digit numbers
We are learning to use different additive thinking strategies such as the bar model, the jump strategy and the split strategy to solve addition and subtraction problems with two- and three-digit numbers. Additive thinking is connected to understanding the construction and representation of numbers, especially part-part-whole ideas and place value. We will be focusing on knowing when to add and subtract and choosing the correct strategy for the task or problem.
Dilein using the split strategy
Harriet using the jump strategy
Gianni using the bar model
Dilein using the split strategy
Harriet using the jump strategy
Gianni using the bar model
Warm up Game: Salute
To continue building confidence in these skills at home, try playing the game Salute:
Materials:
Pack of cards with the picture cards removed. (The aces act as 1)
Three players.
How to Play:
Place the cards in a pile, face down.
Two players pick up a card.
Players do not look at their card but hold the card, facing out, on their foreheads in a “salute”.
Player three adds the numbers on the two cards they can see and calls the answer.
Player one and player two have to work out from the answer the value of the card on their forehead.
The game is repeated with the players swapping their roles.
Kairi, Sarah and Bella playing Salute
Audrey, Max, Sofia playing Salute
Kairi, Sarah and Bella playing Salute
Audrey, Max, Sofia playing Salute
YouTube Instructions:
If you have any photos of your family playing Salute please email them to Fran for a feature in our school newsletter: Fran.Milic@education.vic.gov.au
The Year Three Team
Kellie Oxlade, Sharon McWhinney, Jon Kent and Anthea Christofi