Weight
The students were exploring measurement using weighing scales. There were a number of items such as milk, flour and vegetables to weigh. They used the weights to see how heavy and light the items were.
Daniel “What is it for?”
Gabby “For weighing.”
Vivian “Its very light.”
Salva “If you want to see the things which is heavier. You put things in the box. If you take some things out, that side will go up. Make it balance.”
They recalled and shared where they have seen weighing scales.
They observed and shared what they noticed about how the scale was balanced. They used their bodies to show what balanced may look like.
Daniel “He took all the blocks off, he put 2 bags on each side.”
Ricky “You have to put blocks on the lighter side.”
Daniel “He put the same blocks on the other side.”
Each student was given a block that was either 5, 10 or 20 grams.
How can we make 20 grams?
Students gathered together to make 20 grams. They worked together to solve a problem.
Vera “I have a log (10 grams). I need another log (10 grams).”
They made 20: 10+10, 5+10+5 and 20+0.
SLO’s
- Identify, compare and describe attributes of real objects and situations
- Represent the results of measurement with drawings and concrete materials
- Solve problems involving addition and subtraction of single digit numbers using manipulatives, models and informal written strategies
- Recall addition doubles up 5+5