Teachers TryScience

Introduction -

Ascertain students’ prior knowledge about 2D and 3D shapes. Induce inquisitiveness among the students by encouraging a large group discussion about the 2D and 3D shapes they use or see round them. Put forward some questions like

1. Where do you see 2D and 3D shapes around you? How can you differentiate between various 2D and 3D shapes? To recapitulate types of 2D and 3D shapes learnt show the video with link https://www.youtube.com/watch?v=6zBUfOtiG-U

2. After group discussion on 2D and 3D shapes around us, show them the video with link https://www.youtube.com/watch?v=2cg-Uc556-Q to facilitate their thinking process.

3. What would happen if all the Toys in India disappeared overnight?

4. How and where is mathematics involved in the Toys that you see or use?

5. How do you think the people in the early ages made Toys without the knowledge of mathematics? What is the advantage of today’s Toys over the earlier ones?

6. Divide the class in groups of 4 and give each group a K-W-L chart. Have each group fill ‘K’ , and ‘W’ columns about 2D and 3D shapes. Check and discuss K-W-L charts with each group.

7. Inform the students that they are going to design a Toy using the tool of GeoGebra software.

8. Working as engineering teams, students design and create model Of toys using Thermocol , fevicol ,cutter Their goal is to Design beautiful toys using GeoGebra software. Let the competition begin!

9. Pass the set of required stationary and material to each group.

10. After the Toys have been constructed manually they need to change into digital form for that they use handbook for using GeoGebra tool.

    Integration of the concept with other STEM Subjects:

    Topic as integrated with Technology- GeoGebra software was used as techno-support for designing the Amazing toys checking for the symmetrical design.

    Topic as integrated with History- Learning about the history of Toys and different types of Toys used in the Ancient times And relating them with famous structures

    Engineering Designing

    Introduction

    To start, you may want to introduce students to GeoGebra tools with the help of smart board.

    https://www.youtube.com/watch?v=8mRHhSIvnWk

    Part – 1 - Students learn about different types of Toys and Prepare one of them using thermocol by cutting and pasting .

    Tell the students that they are going to watch video about preparing a toy using concept of 3D with the help of thermocol.

    https://www.youtube.com/watch?v=ON11IGbgplk

    Now tell them that today they all are architects and design engineers and have to help a child to prepare a beautiful Toy for him.

    Let the students sit in the made teams and discuss the problem, to brainstorm ideas, make sketches, and choose a final design for their Toys. Also ask them to choose a name for their design team. (Encourage students to sketch the Toys made up of multiple 3D shapes). If need arises and time permits, allow each group one class period to research different types of toys.

    Provide them time to work on their design keeping in mind concept of symmetry . Guide them to work together by dividing the work equally. Finally reassembling all the 3D shapes to make a Amazing Toy.

    · Before they begin Bring back the class as a whole group and set the following rules:

    · (i) The Toy should have more than two 3D shapes.

    · (ii) The toy should have more than two lines of symmetry.

    · (iii) The Toy should be colorful.

    Part – 2 - Designing the Amazing toys

    1. Instruct and encourage each team to distribute their workload evenly among the members for timely completion of the project.

    2. The students and teams who need assistance can be guided with useful inputs which are available to the teacher.

    While Designing the Amazing toys they need to keep in mind the symmetrical

    1. aspects of the Toys using GeoGebra tools. (Teacher can keep kindling their imagination by asking questions)

    If the students need help at any point, let them refer to the handbook given to them.

    Part – 3 - Toy testing and redesigning

    1. Provide students time to make a presentation of their models with an interesting name and details.

    2. Again Orient students on the timeline and the roles for each student.

    3. Have students test Toys by using concept of symmetry. Students may modify their Toys, at this point, and then see if they fit the specified criteria.

    4. Have groups present their Toys and testing results to the class. ask the team to rethink and redesign or make required alterations to make their Toys symmetrical

    5. A question answer round is opened to the student which is led by the teacher

    o Let students to speculate about why some Toys were more exact to the criteria than others.

    o What are factors responsible?

    o What flaws were inherent in the building materials? How were those flaws overcome?

    6. To conclude ask the students to fill the summative questions in the workbook

    Culminate the activity by asking students to reflect on the entire design process. Have students fill in the L column of the K-W-H-L