Materials from our co-teaching session can be found through these links:
Three-part lesson plan
Assessment for Learning template
Prior to the lesson:
Students in Anastasia's class had been learning about length and perimeter prior to this lesson. This lesson is more of a culminating task.
Part 1: Activation of Prior Knowledge
Sue asked students: What is perimeter? After students did a think-pair-share with the person beside them, Sue gathered a definition and recorded it on chart paper. Students could refer to this while solving the problem.
Sue then showed the class a picture of a triangle with some measurements. She asked students to figure out the perimeter of the shape. After a think-pair-share, Sue recorded some student thinking on the chart paper.
Part 2: Working on It
Anastasia gave each pair a copy on the problem. The problem was taken from the Grade 3 EQAO booklet (Spring 2009, #100.
After read the problem over, she completed the KWC chart with the class.
Anastasia also clarified what the word 'justify' meant so that students knew exactly what she was looking for in terms of their communication.
She also reminded students about the different measurement tools they could use to help them solve the problem.
After students started to work on the problem, Sue and Anastasia walked around to look for specific student thinking to highlight during the Part 3 of the lesson.
Part 3: Reflecting and Connecting
|This pair got the right answer but had difficulty using the appropriate language (most popular, least popular).|
|This pair did not share but used a great strategy of just measuring the long sides. We're not sure where they went wrong in their calculations.|