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Core concept: Objects can belong to more than one category when sorted by attributes.
Learning Intention:
Learning Intention:
Students are learning that:
Students are learning that:
- mathematicians can sort the same collection in more than one way, depending on the attributes that they are paying attention to
- objects can belong to more than one category when you are noticing more than one attribute.
Success Criteria:
Success Criteria:
Students can:
Students can:
- identify, describe, and sort everyday objects by colour, size, or shape and then explain their choices
- identify what is different between objects
- identify attributes that allow shapes to belong in more than one category.
Playing with maths helps you become a mathematician!
Playing with maths helps you become a mathematician!
Watch Play School’s Marvellous Maths – Sort and classify with Eddie (4:48).
Watch Play School’s Marvellous Maths – Sort and classify with Eddie (4:48).
Provide time for students to complete a Think-Pair-Share with a partner about what they have noticed or wondered. Record student responses on an anchor chart.
Provide time for students to complete a Think-Pair-Share with a partner about what they have noticed or wondered. Record student responses on an anchor chart.
How many different ways could you sort or categorise these shapes?
How many different ways could you sort or categorise these shapes?
Students turn and talk with a partner to share their thoughts and strategies on how they could sort the shapes above. You may need to explicitly define categorise - sort into groups based on an object or thing's appearance or attributes (another tricky word introduced to students this lesson).
Students turn and talk with a partner to share their thoughts and strategies on how they could sort the shapes above. You may need to explicitly define categorise - sort into groups based on an object or thing's appearance or attributes (another tricky word introduced to students this lesson).
Activity: Now it's your turn to try! With a partner, test how many different ways you can sort or categorise the shapes.
Activity: Now it's your turn to try! With a partner, test how many different ways you can sort or categorise the shapes.
Explicit Modelling:
Explicit Modelling:
Think aloud: I'm noticing that the blue square can be placed in two different categories. What it is about the blue square that means it can belong to 2 different categories?
Think aloud: I'm noticing that the blue square can be placed in two different categories. What it is about the blue square that means it can belong to 2 different categories?
Think aloud as you discover that the blue square is used more than once in 2 different categories. Ask what it is about the blue square that means it can belong to 2 different categories. Students turn and talk with a partner to share their thoughts and strategies.
Think aloud as you discover that the blue square is used more than once in 2 different categories. Ask what it is about the blue square that means it can belong to 2 different categories. Students turn and talk with a partner to share their thoughts and strategies.
What do you notice about the way the shapes have been categorised in the picture below?
What do you notice about the way the shapes have been categorised in the picture below?
What do you notice about the way the shapes have been categorised in the picture below?
What do you notice about the way the shapes have been categorised in the picture below?
Ask students if they can see any shapes from all categories that share attributes. Demonstrate how the pink triangle could below in both categories.
Ask students if they can see any shapes from all categories that share attributes. Demonstrate how the pink triangle could below in both categories.
Consolidation and meaningful practice: Exploring different ways to sort
Consolidation and meaningful practice: Exploring different ways to sort
In small groups, students explore ways that they can sort and represent their shapes to see attributes that are shared between shapes.
Students go on a gallery walk to see how other students have sorted their shapes.
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