Shapes

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ستتعلّم

• Name and describe circles, triangles, squares, rectangles, cubes, cylinders, cones and spheres, whatever their size or orientation.
• Sort shapes by attributes such as the number of sides or corners, and explain the sorting rule.
• Compose larger shapes from smaller ones and decompose shapes into parts.

تعريف

• A triangle is a closed flat shape with three straight sides.
• A side is a straight edge of a flat shape; a corner (vertex) is where two sides meet.
• A square is a rectangle whose four sides all have the same length.

مبرهنة

• Turning or moving a shape does not change what shape it is.
• Every square is a rectangle, but not every rectangle is a square.

مفاهيم خاطئة شائعة

• Thinking a square turned onto a corner is no longer a square.
• Believing a triangle must have a flat bottom or equal sides.
• Treating colour or size as part of what makes a shape a triangle or a square.

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اكتشافات اختيارية

• Sets Sorting shapes into overlapping groups, such as 'four-sided' and 'red', leads to Venn diagrams.

مسارات التعلّم

• Conventional K–12 progression