**These four activities will help you introduce the topic of 3D surfaces to your students using experiential learning methods**

1. **Gold in the Coal Activity****:**

**Purpose:** This Activity will help students create something new and apply the mathematical concept of Surface Areas of 3D Surfaces.

**Procedure: **

– Ask students to make a batch of 5 different 3D solid Geometric Shapes using waste material that they find in the surroundings.

– Measure the dimensions of those shapes.

Using their dimensions, Calculate the Total and Curved Surface Areas.

2. **Counting Squares****:**

**Purpose**: Calculating Surface Area With Hands-on Activity.

**Material Required**: Square printed sheet/ Graph sheet, a pair of Scissors, Glue, Cube and Cuboid.

**Procedure**:

– Divide the class into groups of 5s.

– Provide students with a Square printed sheet/ Graph sheet.

– Ask students to cut unit squares from the sheet and paste them on the faces of Cube and Cuboids.

– Cover the solids entirely with unit square sheets, without overlapping squares.

– Now count the number of squares on each solid shape.

– Calculate the Surface area of solid with actual measurement and calculation.

– Students will find that the Surface area of shape is equal to the number of squares.

3.** Wind it Up:****Purpose**: Activity to enrich Kinesthetic Skills

**Materials Required**: Strings, a pair of Scissors, Sphere ball.

**Procedure:**

– Provide the materials to students and ask them to calculate the surface areas of a spherical ball given to them using strings and scissors.

– Let learners interact with the objects in hand. In case, the learners are not able to reach the solution on their own, help them by Scaffolding *(According to Vygotsky, Students are in the Zone of Proximal Development* *from where they can be moved ahead with the help of More knowledgeable Other by Scaffolding technique). *

– Ask the students to take a string and paste its one end on the ball

– Then simply wind the strip on the entire ball as it is wound on Spinning Tops with which they must have played in their childhood.

– Finally, unwind the string and lay it in the form of 4 circles of equal radius as sphere as shown in the sample image.

– Compare the total length of the string with the calculated surface area of the ball.

4. **Who will be the Architect:**

**Purpose:** To help students visualize and comprehend the concept of Scaling.

**Activity:** Let’s prepare a map of a house/ garden but with a twist!

**Procedure:** Prepare an outline of each room in your house including doors and windows in the designated area and also calculate further areas for each room.