Glow Hunters Teacher Guide
Weekly Lesson Plan
Glow Hunters
K-3 Play-Based & Inquiry Light Science Unit (4 Days • 30 Mins/Day)
Teacher Guide Pages 1 of 4
Unit Philosophy
This K-3 unit uses a Guided Inquiry model. Students explore tactile sensory stations first to build intuitive hands-on knowledge. Following self-directed play, the teacher facilitates class conversations to name and define the core concepts of light.
4-Day Map At-A-Glance
Day 1
Flashlights
Illumination
Day 2
Mirror Magic
Reflection
Day 3
Blockers
Transmission
Day 4
Rainbows
Refraction
DAY 1
Flashlight Detectives: Illumination
Setup & Materials
- • Flashlights (1 per pair)
- • Mystery Box (shoe box with peephole & hidden object inside)
- • Dark corner or blackout curtains
- • Animal shadow puppet templates
Pacing (30 Minutes)
0-5M
The Hook (Peephole Box): Pass around a sealed box containing a tiny toy dinosaur. Ask students to look through the tiny hole without any light. Ask: "What is in there? Why can't we see it?"
5-20M
Sensory Stations: Divide students into small groups.
Station A: Peek into the mystery box with a tiny flashlight beam.
Station B: Shine lights onto walls to trace giant hand puppets.
20-30M
Guided Inquiry Debrief: Gather in a circle. Ask: "What changed inside the box? Did the object change, or did our eyes have help?" Guide them to define illumination: light making the dark visible.
Key Discussion Questions (Day 1)
"Can your eyes see anything in absolute total darkness? Where does the light come from inside our room? If we turn off all the flashlights, does the toy dinosaur still have color?"
Glow Hunters Science Sequence • Day 1 Copyright © 2026 Lenny Instructional Designs
Unit Lesson Plan
Day 2: Mirror Magic
Focus: Reflection, Angling, and Bouncing Light
Teacher Guide Page 2 of 4
Concept: Light Bounces (Reflection)
Light behaves like a super-fast bouncy ball. When it hits a smooth, shiny surface (like a mirror or CD), it bounces off at the exact opposite angle. Shiny things don't create light—they redirect it!
Materials Checklist
- • Small acrylic safety mirrors
- • Old shiny CDs or DVDs
- • Foil, metal spoons, wax paper
- • "Glow Bug" wall target posters
- • Painter's tape for light paths
⚠️ Safety Note Ensure children do NOT shine flashlights directly into each other's eyes. Mirror exploration must happen low to the table.
Pacing (30 Minutes)
0-5M
The Hook (The Laser Maze): Place a paper target "Glow Bug" on the wall. Shine your flashlight the wrong way, and ask: "I want to light up that bug without aiming at it. How can we bend our light beam?" Show a mirror.
5-20M
Sensory Exploration: Let children experiment in pairs.
Station A (The Target Game): Try to bounce a flashlight beam off a mirror and land the light directly onto the wall target bug.
Station B (CD Rainbow Trails): Tilt shiny CDs under bright lights to cast dazzling rainbow patches across the ceiling.
Station C (Smooth vs. Rough): Test mirror vs. aluminum foil vs. crumpled foil. Can we see our faces in all of them?
20-30M
Guided Inquiry Debrief: Gather students. Ask: "Which materials bounced light best? What did the shiny things have in common?" Guide them to define reflection: bouncing light off surfaces.
Key Discussion Questions (Day 2)
"Why does smooth aluminum foil reflect like a mirror, but crumbled foil does not? When you stand closer to the mirror, does your reflection shrink or stay the same? How can we make light go around a corner?"
Glow Hunters Science Sequence • Day 2 Copyright © 2026 Lenny Instructional Designs
Unit Lesson Plan
Day 3: Shadow Blockers
Focus: Light Transmission (Transparent, Translucent, Opaque)
Teacher Guide Page 3 of 4
Concept: Light Transmission Modes
Different materials interact with light in three ways: letting it straight through (transparent), scattering/bending some of it (translucent), or stopping it cold (opaque), which casts a shadow.
Materials Checklist
- • Clear plastic cups, cling wrap
- • Wax paper, tissue paper
- • Cardboard, wood blocks, books
- • Sorting mats (Go, Slow, Stop)
- • Colorful translucent blocks
Play Hack: Use colorful translucent gears or glass gems to show kids how colored shadows form. It's magical!
Pacing (30 Minutes)
0-5M
The Hook (Window vs. Wall): Point out a window and point out a brick wall. Ask: "Why can we see trees outside but not through this wall? What does light do when it hits them?"
5-20M
Sensory Exploration: Students work at stations with sorting trays.
Station A (The Traffic Sorting Game): Give students flashlights and three bins: "Go" (lets light through), "Slow" (lets some light through), and "Stop" (makes solid shadows). Students test items and sort them.
Station B (Shadow Theatre): Use opaque characters and cardboard structures to build shadow shapes of varying sharpness.
20-30M
Guided Inquiry Debrief: Bring sorted items to the rug. Ask: "How does the shadow of a piece of wax paper look compared to a piece of cardboard?" Guide them to define Transparent, Translucent, and Opaque.
Key Discussion Questions (Day 3)
"What happens to a shadow when we pull the light source further away? Is water transparent, translucent, or opaque? What kind of sunglasses do you wear—Go, Slow, or Stop?"
Glow Hunters Science Sequence • Day 3 Copyright © 2026 Lenny Instructional Designs
Unit Lesson Plan
Day 4: Rainbow Chasers
Focus: White Light Splitting & Refraction
Teacher Guide Page 4 of 4
Concept: White Light holds many Colors!
The "white" light from our sun or flashlights is actually a mixture of red, orange, yellow, green, blue, and purple light! Prisms, water droplets, and shiny CDs can split and separate these wavelengths so we can see them.
Materials Checklist
- • Triangular acrylic prisms
- • Shallow pans of water + small mirror
- • Old shiny CDs + strong flashlights
- • White poster board screens
Pacing (30 Minutes)
0-5M
The Hook (Prism Magic): Shine a flashlight through a clear glass prism onto a white sheet of paper. Let students gasp at the colorful rainbow. Ask: "Where did those colors come from? Did I paint them?"
5-20M
Sensory Exploration:
Station A (The Water Rainbow): Submerge a flat mirror at an angle in a shallow tray of water. Catch sunlight or a strong flashlight beam to throw a large, bright rainbow onto the wall.
Station B (CD Color Catchers): Shine flashlight directly onto the CD's underside and reflect color stripes onto a partner's white shirt.
20-30M
Guided Inquiry Debrief: Gather in a circle. Ask: "How did we make white light reveal its secret colors? What colors did you find?" Create an anchor chart representing the light spectrum.
K-3 Multi-Age Differentiation Strategy
Kindergarten & 1st Grade
- • focus on sensory verbs: shine, block, bounce, find.
- • Recording matches physical drawings (sketching colors seen, circling items).
- • Focus on sorting items by physical properties.
2nd & 3rd Grade
- • Introduce precise terms: Reflect, Opaque, Spectrum, Source.
- • Challenge to write simple predictions before testing items.
- • Formulate explanations of "why" a mirror works differently than wax paper.
Glow Hunters Science Sequence • Day 4 Copyright © 2026 Lenny Instructional Designs
Flashlight Detective Sheet
Day 1 Activity
Flashlight Detective Sheet
Glow Hunters Unit Property: Illumination
Name:
Date:
🕵️♂️
Your Detective Mission: Shine your light into the darkness! Test what happens inside the Mystery Box and on the shadow wall, then draw or write your findings below.
1 Mission 1: The Mystery Peephole Box
A. Looking in without light:
Draw what you saw here
"It looked completely..."
B. Looking in with flashlight:
Draw the hidden object here
"Now I can clearly see a..."
2 Mission 2: Shadow Shape Master
Put your flashlight closer to the wall, then pull it back. What happens to your shadow?
The shadow got bigger!
The shadow got smaller!
My Daily Light Discovery
Complete this sentence with your team:
Glow Hunters • Day 1: Illumination Student Lab Notebook
Shadow Blockers Lab Sheet
Day 3 Activity
Shadow Blockers Lab Sheet
Glow Hunters Unit Property: Transmission
Name:
Date:
🚦
Your Shadow Mission: Shine light at different items! Do they let light zoom straight through, slow it down, or block it completely? Check the boxes and draw below!
1 Mission 1: The Light Traffic Jam Sorting Game
Test each object with your flashlight. Check the correct lane:
Object
🟢 GO (Clear)
🟡 SLOW (Foggy)
🔴 STOP (Shadow)
Plastic Wrap / Cling Film
Wax Paper / Tissue Paper
Thick Cardboard / Wooden Block
Clear Glass / Clear Water
2 Mission 2: Shadow Comparison Drawing
Draw an Opaque Object's Shadow:
Draw dark shadow here
Is the shadow dark or light?
Draw a Translucent Object's Shadow:
Draw light shadow here
Does any light shine through?
My Daily Light Discovery
Complete this sentence with your team:
Glow Hunters • Day 3: Transmission Student Lab Notebook
