Great beginning and end assessment. 10 minutes to do the task.
Creating a rubric for it. Start with mission accomplished.
Great for goal setting and where to next. Could start the unit with it. This would group the kids and could be used for the weeks teaching.
Teaching the area
What is the area? Make the link with number and strategy. How can this then be between 20-50 metres squared. Broken down into steps.
Introduce the compound shape. Count each cube. Then we can look at faster than this.
How else could we count them?