B1.2 Compare and order whole numbers up to and including 200, in various contexts.
Activity 1: Number Line to Compare Numbers
Have students work in teams. Give each team three number labels (for example, 144, 82, 156).
Have students represent the three numbers using the base 10 material and match the label to its representation.
Ask students questions such as:
- Visualize these numbers on a number line. Which numbers are closer together? Why or why not? Check your answer.
- Which is closer to 100? to 200? to 150?
- Is there a number or numbers between 100 and 150?
- What could be a number that is greater than these three numbers?
- How would you place these numbers in ascending order? in descending order?
Source : L'@telier - Ressources pédagogiques en ligne (atelier.on.ca).
Activity 2: Number Strip Game
Number of players : two teams of two players
Goal of the game: Fill in all the spaces on the strip.
Materials
- two sets of cards numbered from 0 to 9
- a strip of cardboard divided into boxes
Directions
Place the cards face down on the table.
Teams take turns picking 2 cards (for example, 2 and 4). Each team discusses forming a number using these two numbers (for example, 24 or 42). Students must consider where to place their number on the cardboard strip.
The team loses its turn when it cannot form a number that can be placed on the cardboard strip.
| 0 | 100 |
Note: It is important to model this game beforehand. Discuss with students why they decided to place their numbers in the different locations.
Variation
Play as a class, giving each student a strip.
Vary the strips by changing the two numbers at the ends: 20 and 55, 25 and 50, etc.
Source : L'@telier - Ressources pédagogiques en ligne (atelier.on.ca).
Activity 3: Numbers That Move
Ask students to write a number from 105 to 200 on their small whiteboard or on a piece of paper.
Divide students into two groups.
One of the groups stands up. Students place themselves in ascending or descending order according to the numbers written on their board or sheet.
When they are finished, the other students look at the numbers and determine how well the group did.
Repeat the same steps, alternating groups of students.