Rainbow Architects

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K3L25 Rainbow Architects

Lesson Duration: 45 minutes

Grade: K3

Preparation Time: 15 minutes

Learning Objectives:

  1. - Children will be able to identify and arrange colours in the sequence of a rainbow
  2. - Children will be able to improve their fine motor skills and hand-eye coordination
  3. - Children will be able to gain a basic understanding of light refraction and the phenomenon of light splitting into various colours
  4. - 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

Lesson Procedure

3 mins - Welcome Time

• Sing "Hello Song"
• Show typhoon pictures
• Introduce wind measurement concept
 

15 mins -  Hands-On Challenge 1: Building the Rainbow 

1. 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.

2. 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.
 

15 mins -  Hands-On Challenge 2: Constructing the Light Stand and Observing Refraction

1. 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.

2. 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.

 

15 mins - Observation and Discussion

   - 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.

 

5 mins - Wrap-Up

   - 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.