Bubble Resources Bubblz Maths, in partnership with AIMSSEC The African Institute for Mathematical Sciences Schools Enrichment Centre

Transcription

1 Bubble Resources Bubblz Maths, in partnership with AIMSSEC The African Institute for Mathematical Sciences Schools Enrichment Centre

2 ACTIVITY BUBBLE SHAPES WITH FRAMES Resources: Washing up liquid, water, bucket, stiff wire, bendy straws. Vocabulary: sphere, cube, triangular prism, tetrahedron, octahedron, 3D, solid, frame, inside, triangle, square, rectangle, edge, face, vertex/vertices. Curriculum Links: Learning Outcome: Describes, sorts and compares 2D and 3D objects in pictures and the environment, including: *2D shapes in or on the faces of 3D objects, *flat, straight and curved surfaces and edges. INTRODUCING THE ACTIVITY Learners can explore 3D shapes in a memorable way using some dilute Fairy washing-up liquid solution and some simple 3D shapes made from wire or bendy drinking straws. Instructions: Make a skeleton tetrahedron, cube, triangular prism, and octahedron out of wire or bendy straws and tape. First make polygons (triangles and square). Join the straws by inserting the short section of one straw into the longer section of another straw and pushing it in up to the bend. Use sticky tape to join the polygons together to make the frames. Make the size of the shapes small enough to fit inside your bucket. 2 Pour enough water in the bucket to more than cover each of the shapes you have made. Pour 100ml of dishwashing detergent into the water and stir gently. Practise dipping each shape once to see the thin soap film that forms inside the shapes. Dip them a second time half way to catch a bubble inside (The bubbles will be the same shape as the skeleton except with curved edges). Always do the cube last because the result is the most exciting. 2 Triangular based pyramid Cube Triangular Prism Octahedron (Tetrahedron)

3 Activities for young learners (ages 3 to 7) (Foundation and KS1) the same questions. 3 Provide groups with a bucket of soapy water and one shape. Ask the learners to describe what they can see. Encourage them to name the shapes they recognise. How many edges does the soap film have? How many faces does the soap film have? What do you think will happen when you dip it again half way? What shape is the bubble? Are the bubble and the frame the same shape? If they are different, how are they different? Pass your shape to the next group and try a new shape. Ask What do you think will happen if you pop all the soap films so that the bubble inside is free to float away? What shape is the freed bubble? [It becomes a sphere.] Show each shape to the class and ask: ACTIVITIES FOR THE WHOLE CLASS How many edges, how many faces, how many vertices do they have? What shape are the faces? What is it called? What do you think will happen when I dip the shape in the bubble solution? Fully dip the shape into the solution and ask: What they can see? Encourage the learners to describe fully and name the shapes they recognise. How many edges does the soap film have? How many faces does the soap film have? 3

4 What do you think will happen when you dip it again? 4 Dip the frame again until it is half submerged to catch a bubble shape and ask: What shape is the bubble? What are the differences between the bubble and the frame? What are the similarities between the bubble and the frame? Repeat for all the shapes (cube last). What do you think will happen if you pop all the soap films so that the bubble is free to float away? What shape is the freed bubble? [It always becomes a sphere.] What other new shapes could we try out? What shape are the soap films going to be? What shape is the trapped bubble going to be? 4

5 Activities for learners aged 7 to 13 (KS2 & KS3) 5 Provide groups with a bucket of soapy water and one shape. Ask: What can you see? How many edges does the soap film have? How many faces does the soap film have? What do you think will happen when you dip it again half way? What shape is the bubble? What are the differences between the bubble and the frame? What are the similarities between the bubble and the frame? Pass your shape to the next group and try a new shape. Ask the same questions. What do you think will happen if you pop all the soap films so that the bubble inside is free to float away? What shape is the freed bubble? [sphere]. Show each shape to the class and ask: 5 ACTIVITIES FOR THE WHOLE CLASS How many edges, how many faces, how many vertices does it have? What is it called? What do you think will happen when I dip the [ name the shape ] in the bubble solution? Fully dip the shape into the solution and ask: What can you see? How many edges does the soap film have? How many faces does the soap film have? How many vertices does the soap film have? What do you think will happen when you dip it again?

6 Dip the frame again until it is half submerged to catch a bubble shape and ask: What shape is the bubble? What are the differences between the bubble and the frame? What are the similarities between the bubble and the frame? Repeat for all the shapes (cube last). What do you think will happen if you pop all the soap films so that the bubble is free to float away? What shape is the freed bubble? [It always becomes a sphere.] 6 What other new shapes can we try out? What shape are the soap films going to be? What shape is the trapped bubble going to be? 6

7 7 KS2 & KS3 GROUP ACTIVITIES this is an outdoor activity. Learners should make loops of different sizes to experiment with making bubbles (spheres) of different sizes. Ask learners to estimate the size of the sphere they will make, before they make it. Get learners to catch a small sphere and compare its width with the length of the string. ACTIVITIES FOR THE WHOLE CLASS Make spheres using the different loops. Ask the learners to show you the size of the sphere with their hands. You could get one of the learners to make the bubbles. Ask Were all the bubbles spherical (nice round spheres)?. Ask: How can we make the sphere bigger without changing the length of the string? [include more air]. Using a small loop quickly make lots of bubbles and ask: How many bubbles can you see? Learners have to concentrate on the bubbles as some pop while others are being made, so the number of bubbles in the air changes all the time. Ask What else is spherical (the shape of a sphere)?. What does half a sphere (a hemisphere) look like? (Small bubbles landing on a wet surface make beautiful hemispheres for the learners to examine.) 7

8 KS2 & KS3 BUBBLZ MATHS Bubble Resources ACTIVITY 10 BUBBLE SHAPES WITH FRAMES Resources: Fairy washing up liquid, water, bucket, stiff wire, bendy straws. Vocabulary: sphere, cube, triangular prism, tetrahedron, octahedron, 3D, solid, triangle, square, rectangle, edge, face, vertex/vertices. Curriculum Links: Learning Outcome Shape and Space: similarities and differences between different polyhedra. INTRODUCING THE ACTIVITY Learners can explore 3D shapes in a memorable way using some dilute Fairy washing up liquid solution and some simple 3D shapes made from wire or bendy straws. Instructions: Make a skeleton cube, triangular prism, tetrahedron and octahedron out of wire or bendy straws and tape. Make a skeleton tetrahedron, cube, triangular prism, and octahedron out of wire or bendy straws and tape. First make polygons (triangles and square). Join the straws by inserting the short section of one straw into the longer section of another straw and pushing it in up to the bend. Use sticky tape to join the polygons together to make the frames. Make the size of the shapes small enough to fit inside a bucket of your choosing. Pour enough water in the bucket to more than cover each of the shapes you have made. Pour 100ml of dishwashing detergent into the water and stir gently. Practise dipping each shape once to see the thin soap film that forms inside the shapes. Dip them a second time half way to catch a bubble inside (the bubbles will be the same shape as the skeleton except with curved edges). Always do the cube last because the result is the most exciting. 8 Triangular based pyramid Cube Triangular Prism Octahedron (Tetrahedron) Hexahedron) (Pentahedron) 8