Last week we began our mini unit on measurement. Both the Grade 2 and the Grade 3 students need to learn similar outcomes in this area, but in Grade 3, we begin looking at standard measurement such as centimeters and meters.
We began by reviewing non-standard measurement for all students. Laid out on each table were two pictures of school objects and some unifix cubes. Students moved to each table to measure and record the length of each object in the picture using the unifix cubes. Before we began we reviewed where we begin measuring from (the very start of the object), and how we measure when we do not have enough materials (we take from the back and move to the front). This activity worked really well as an introduction to the unit.
Next, we continued practicing our measurement skills using non-standard units. Each table group was provided with three units they were to measure with, unifix cubes, paperclips, and popsicle sticks. They then had to measure a variety of classroom objects using all three of these units. Some of the objects took quite a while when using some of the smaller objects such as the unifix cubes!
In our next activity, the Grade 3 students were introduced to the concept of standard measurement and why we use it. We then talked about how we measure using our ruler. Our classroom set of rulers have inches and millimeters on them, so we had to be a bit creative. We are not using the inch side and for the millimeters we can measure correctly as long as we ignore the last zero. So if we measure something that is 40 mm long, we know that it is 4 cm long. This conversation led us to discuss why it is so important to include our units of measurement when recording the length of objects.
During this time, the Grade 2 students were practicing measurement as well. Each of them received a paper to trace their had. They then cut the paper down to size and used it to measure different objects around the classroom. They had to see how many hands wide, tall, and long the objects were.
Today we continued working on measurement and this time we used gummy worms! Each student got 4 gummy worms of different lengths. The Grade 2 students were to measure each of their gummy worms using unit cubes and the Grade 3 students were to measure their gummy worms in centimeters. Of course when we were all finished, everyone got a little treat.


























































