Subtraction Strategies: Taking Away Together
Year 1-2 Mathematics Learning to subtract within 20 and 100 Using multiple strategies and ICT tools
WALT - We Are Learning To
Understand and solve subtraction problems Use physical and virtual materials to model subtraction Write subtraction number sentences Explain our thinking and methods Work independently, in groups, and as a whole class
Success Criteria - How We Know We're Learning
I can use materials to show subtraction problems I can write subtraction number sentences (15 - 7 = 8) I can explain my thinking to others I can work well in different group sizes I can use ICT tools to help my learning
Subtraction Story Time
Listen to our subtraction story Use counters to act it out Write the number sentence together Share what we notice
Different Ways to Subtract
{"left":"Counting back on a number line\nUsing ten frames and counters\nTaking away with physical objects","right":"Mental strategies like bridging\nBar models and part-part-whole\nVirtual manipulatives on tablets"}
Small Group Rotations
Group 1: Counters and ten frames (within 20) Group 2: Tablets with virtual manipulatives (within 50) Group 3: Mental strategies and games (within 100) Teacher moves around to help everyone
Think and Share
Which subtraction strategy helped you most today? Can you show us your thinking using the Think Board? What was challenging? What was easy? How did the ICT tools help your learning?
Celebrating Our Learning
We used different strategies to subtract We worked independently and in groups We explained our mathematical thinking We used both hands-on and digital tools Everyone was successful in their own way!