The Problem: The children had 42 Kadinsky circles to colour. On the first day, each child coloured in 14. How many left to colour?
Possible solution methods:
* Missing part problem e.g. 14 + ? = 42 with materials, drawing or through known facts
* Missing part subtraction e.g. 42 - ? = 14
* Result unknown subtraction e.g. 42 - 14 = ?
* Result unknown subtraction e.g. 42 - 14 = ?
* Counting by tens e.g. 14 + 10 + 10 + 10 = 42; subtract 2
Communication Focus: Listening; Restating
Students chose their own buddies as I have found this can increase engagement. Other times, students work in directed pairs/groups.
I noticed:
* Hundreds boards were very useful
* Many students identified the number range, e.g. circling 14 and 42 on the hundreds board
* Some students counted the missing numbers, with varying accuracy
*As previous, some students actively co-construct and share their solution. Some do not.
* Students who are working on the 0-20 number range quickly lost interest. I have Year 1 to 3 students in the group, and understanding ranges from Stage 1 to Stage 5.
* Many students identified the number range, e.g. circling 14 and 42 on the hundreds board
* Some students counted the missing numbers, with varying accuracy
*As previous, some students actively co-construct and share their solution. Some do not.
* Students who are working on the 0-20 number range quickly lost interest. I have Year 1 to 3 students in the group, and understanding ranges from Stage 1 to Stage 5.
Feedback:
* Try separating in two groups, and using two different number ranges. Work with each group separately. Ensure there are a mix of abilities in each group, but that students working on 0-20 numbers are able to access the problem.
* I might do this in the one session, with two ten minute problem solving sessions and independent tasks / MMM the remainder of the time.
* Talk less! Prompt students...what can you tell us about the story? What else do you know?
* I might do this in the one session, with two ten minute problem solving sessions and independent tasks / MMM the remainder of the time.
* Talk less! Prompt students...what can you tell us about the story? What else do you know?
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