Minds On
Adding it up
Consider what you know about addition.
How might you create different combinations of items that can add up to 10?
Record your answers using a method of your choice.
Action
Problem solving
Task 1: The doughnut shop
A doughnut shop has 8 doughnuts on the shelf.
Some of the doughnuts have sprinkles, and some are chocolate doughnuts.
How many sprinkle doughnuts could there be?
How many chocolate doughnuts could there be?
What combinations of sprinkle and chocolate doughnuts can you think of?
Use the following interactive frame to explore the doughnut combinations, or record your possibilities in a notebook or another method of your choice.
Task 2: At the bakery
A bakery has just opened in your area!
This bakery sells cupcakes. 12 cupcakes fit in a box.
The following image shows a box with some cupcakes in it.
How many more cupcakes are needed to fill the box?
Show your thinking by recording your response using a method of your choice.
You can use the following Number Line to solve this problem. You can also use objects, blocks, or other manipulatives to help you solve the problem.
When you are ready, press Answer to reveal how many more cupcakes are needed.
You need 3 more cupcakes.
You could write this as an addition expression.
9 + 3 = 12
The following image shows another box of cupcakes.
How many more cupcakes are needed to fill this box?
Show your thinking by recording your response using a method of your choice.
You can use the Number Line to solve this problem too. You can also use objects, blocks, or other manipulatives to help you.
When you are ready, press Answer to reveal how many more cupcakes are needed.
You need 7 more cupcakes.
You could write this as an addition expression:
5 + 7 = 12
We know that both cupcake boxes are equal to 12 because both expressions are equal to 12.
We can show that by writing:
9 + 3 = 5 + 7
Task 3: True or false
You know that 9 + 3 = 5 + 7
Are the following expressions equal or unequal?
Select True or False for each expression.
Consolidation
Sharing doughnut combinations
A doughnut shop sells doughnuts in sets of 12.
How many different combinations of sprinkle and chocolate doughnuts can you make if the total is 12?
The following carousel shows combinations of sprinkle and chocolate doughnuts. What do you notice?
Record your ideas in a notebook or a method of your choice.
Reflection
How do you feel about what you have learned in this activity? Which of the next four sentences best matches how you are feeling about your learning? Press the button that is beside this sentence.
I feel...
Now, record your ideas about your feelings using a voice recorder, speech-to-text, or writing tool.