K2L25 Rainbow Architect

Lesson Duration: 45 minutes

Grade: K2

Preparation Time: 15 minutes

Learning Objectives

- Children will be able to identify and arrange colours in the sequence of a rainbow

- Children will be able to improve their fine motor skills and hand-eye coordination

- Children will be able to gain a basic understanding of light refraction and the phenomenon of light splitting into various colours

- Children will be able to apply problem-solving skills and creativity to construct stable structures that are both functional and visually appealing

Materials Needed:

- K'NEX rods and connectors in various colours

- A small flashlight or torch

- An old CD

- A baseboard or flat surface for building

- Construction paper (optional, for decoration)

- Photographs of real rainbows

- Song: I Love Science Song (https://www.youtube.com/watch?v=eVXXIBe7Rwk)

Preparation

- Set up tables for children to sit in groups with the required materials.

- Arrange rainbow photographs for an inspiring display.

- Familiarize with the I Love Science Song to share in the children's joy.

- Familiarize with the related subject knowledge to ensure the smooth flow of the demonstration and explorations.

Lesson Procedure

1. Warm-up Singing (5 minutes)

- Fill the room with music and excitement!

- Play the I Love Science Song and guide our little scientists in song and dance. The I Love Science Song is our anthem for curiosity and joy.

Part 1: Building the Rainbow (15 minutes)

2. Preparation:

- Set up a flat building area with easy access to all materials.

- Briefly explain the concept of rainbows and their significance using pictures or illustrations.

3. Building the Rainbow:

- Step 1: Children select K'NEX rods in rainbow colours and connect them using connectors to form an arch, simulating a rainbow's shape.

- Step 2: Assist children in attaching the completed rainbow securely to the baseboard so it stands upright.

Part 2: Constructing the Light Stand and Observing Refraction (15 minutes) **

4. Building the Stand:

- Step 1: Suggest children to build a stand using K'NEX that will hold the flashlight at an angle aimed at the CD. Provide guidance and assistance in the process.

- Step 2: Remind children that the stand is stable and properly supports the flashlight.

5. Setting Up the Light Refraction Experiment:

- **Step 1: ** Place the CD shiny side up, positioned so that the flashlight beam can hit it when turned on.

- **Step 2: ** Dim other lights in the room, turn on the flashlight, and adjust its position to maximize the refraction effect, creating rainbow colours.

6. Observation and Discussion (5 minutes)

- Encourage children to observe the spectrum of colours and discuss how the bending of light creates such a diverse array of colours. Discuss the similarities and differences between the K'NEX rainbow and the light spectrum.

7. Tidy Up (5 minutes)

- Time to tidy up! Make it fun – who can be the neatest explorer?

- Reflect on the day's journey with a simple recap of their scientific adventure.

- Offer heartfelt praise for their efforts and the new knowledge they've gained.

- Remember, your enthusiasm is infectious! Bring energy and joy to the lesson.

- Be patient and offer guidance warmly to our young learners – they look up to you.

- Safety comes first, so keep a watchful eye as they handle their experiment tools.

- Encourage every attempt, celebrate every discovery, and nurture their growing minds.

- You're not just teaching; you're inspiring future scientists. Your support means the world to them.

Reference

Rainbow: