The lesson was focused on the theme of curling. During the planning, my AT had read upon an article about the best curling stones being made of Blue Granite, which was found in large amounts in Scotland. However, since the area where granite was found was also a Bird Conservatory, companies had to abide by the strict regulations of how much granite they could extract. Hence, my AT thought it was a good idea to base a lesson on granite and curling. We created word problems which looked at the different parts of the curling stone and it also touched upon radius, diameter, area & circumference of a circle as well as volume & surface area of a cylinder. It encompassed the entire unit really well. The word problems required higher level thinking as it required for understanding and applications of various formulas, relating it to previous units (comparison to volume of cubes & rectangular prisms, mass, and percentages).
The lesson was structured in a 3 part lesson:
- For the minds on, my AT and I showed a short video clip on YouTube on Top 10 curling shots to create interest and introduce the topic to the students.
- For action, we had split the class into groups of 4 (a mix of students with high and low strength in Math). They had to read the background information about the blue granite from Scotland, used to make curing stones. Then on chart paper, they solved 7 questions (which were ordered from simple to difficult). During that time, my AT and I observed the students' thinking and took note on the ways they solved the problems. We also assisted them if they were stuck or had any doubts.
- For consolidation, we created a bancho of all their work in front of the class. Students explained how they solved the word problems, while I scribed the highlights/summary of the lesson (major concepts covered through the word problems). They also explained any assumptions they made when solving the problems such as the curling stone being perfectly cylindrical and having no handles during the manufacturing process.
We had extended this activity to the next day, where they were to create their own curling house (target) by using large construction paper and calculate the area of each circles (and compare the difference between the areas in a percentage).
It was a really interesting and fulfilling experience because the students really had a good time solving these word problems and made better connections because of the background information. It also touched upon geography (limited natural resources: granite) and science (Water seeps into concrete as it's more porous, and during winter, freezing temperatures transform water into ice. Hence it expands and breaks down concrete - example: our sidewalks. Hence they use blue granite which is less porous and can be long-lasting - necessary for curling stones). There were observers from other schools and TDSB math board members as well. We all discussed the lesson together and examined all the students' works.
I feel that if teachers get the opportunity, they should definitely do co-teaching or at least co-planning because of these reasons:
CO-PLANNING
-a lot more ideas are put forth as two minds work together
-assess ideas/ lesson plan together in order to make it most effective
-learn strategies from one another
-get to know more online resources (to help base your lessons)
CO-TEACHING
-better class-management as there are two adults in front of the class
-while one teacher writes on the board, the other teacher can continue talking to the class (better time management)
-If anything is missed by one teacher, the other teacher pick up on it
-Better observation of student thinking and student work
-more energy in the classroom (less tiring)
-address student questions better because both teachers can give an answer
-broader perspectives in some cases if teachers think differently - hence can be less biased (*very important for social studies)
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