Identify acute and obtuse angles and compare and order angles up to two right angles by size

New Maths Curriculum - Year 4 objectives.

 
Sorting 2D shapes on a Carroll diagram Sorting 2D shapes on a Carroll diagram

Sort a variety of 2d shapes on a Carroll diagram. Sort by one or two conditions. Sort triangles - scalene, equilateral and isosceles. Sort quadrilaterals, pentagons, hexagons, heptagons and octagons, as well as parallelograms, rhombus, kites and trapeziums. Also sort according to a shapes properties such as acute, obtuse, reflex or right angles and symmetry or whether it is a regular shape.

**2nd May 2013 - I have updated this game as somebody has rightly pointed out to me that equilateral triangles are also isosceles. My apologies for the error.**

For more resources involving sorting shapes and numbers click here.

For more shape and space resources click here.

Sorting 2D shapes on a Venn diagram Sorting 2D shapes on a Venn diagram

Sort a variety of 2D shapes on a Venn diagram. Sort by one or two conditions. Sort triangles - scalene, equilateral and isosceles. Sort quadrilaterals, pentagons, hexagons, heptagons and octagons, as well as parallelograms, rhombus, kites and trapeziums. Also sort according to a shapes properties such as acute, obtuse, reflex or right angles and symmetry or whether it is a regular shape.

**2nd May 2013 - I have updated this game as somebody has rightly pointed out to me that equilateral triangles are also isosceles. My apologies for the error.**

For more resources involving sorting shapes and numbers click here.

For more shape and space resources click here.

Carroll Diagram - Missing Labels - 2D Shapes Carroll Diagram - Missing Labels - 2D Shapes

Explore the common properties of a group of shapes and then drag the correct labels to the Carroll diagram.

For more resources involving sorting shapes and numbers click here.

For more shape and space resources click here.

Angle Drag Angle Drag

Drag the line to make a given angle then measure using a protractor.

ITP Calculating Angles ITP Calculating Angles

New: Find the missing angles in shapes and on straight lines.

View full screen in your browser.  This ITP allows you to place shapes around a point and investigate their angles. You can opt to display the shapes in one, two or four quadrants. The first shape is placed on the screen in the first quadrant with one of its sides horizontal.
Additional shapes are rotated around the central point to fit against the previous shape. In some shapes side lengths and angles are generated randomly. Shapes generated can be dragged to new positions and overlaid to form new intersecting shapes and angles.

This resource is freely available to download from the archived Primary Framework site.

For more shape and space resources click here.