All concepts combined

This mixed practice links several ways of describing the same object: its name, its features, a drawing and a net. Your child has to decide which representation the question supplies and what must be inferred from it. The Primary 4 outcomes develop this connection between flat pictures and three-dimensional solids, so a clear explanation often involves relating a visible part to the whole object.

• Infer a prism or pyramid from its face structure, then connect the solid's faces and edges to those shown in its net.
• Use the face structure of a proposed solid to judge information shown in a drawing or a flat net.
• Count unit cubes arranged in equal layers, then relate each small cube to the six square faces in its own separate net.
• Check both the supply of faces and their arrangement when deciding whether a net can fold into its proposed solid.

If your child names a net as a triangular prism, it must supply two matching triangular ends and three side faces. Check that face inventory against the proposed name before following the folds; a net with only one triangle cannot close that prism.

This mixed solids set consists of Intermediate questions, without separate Basic or Challenge groups. It links a prism's net to an edge count, a pyramid to the triangular faces of its net, and an arrangement of small cubes to the faces needed for their separate nets. Ask your child to identify the object being counted at each stage: a whole solid, one small cube, an edge or a face. In the cube arrangement, count the small cubes before considering the card faces for each one. Check the wording about separate nets carefully, because each small cube needs its own complete set of faces even when some faces were hidden inside the original arrangement.

Why does recognising a solid not settle a net question? Naming a solid identifies the features it needs, but a net question also asks whether those features can join in the arrangement shown. Your child may correctly recognise six squares as cube faces and still need to test the folds. Separating the face check from the arrangement check gives each part of the reasoning a clear purpose.

What should my child do when the viewpoint changes? Look for properties that remain the same, such as the matching ends of a prism or the common vertex of a pyramid. The nearest face may change when an object turns, but its full face structure does not. Ask your child to explain what is hidden in the new view rather than counting only the outlines that remain visible.

How can we review a difficult solids question together? Find the exact change of representation that was difficult: solid to name, dimensions to drawing, or net to folded object. Your child can revisit that focused subtopic, using a simple model where helpful, then explain the connection on the original page. A short explanation of where one face goes can reveal more than repeatedly guessing the final solid.