Rock Detectives Teacher Guide
Kindergarten Science • Earth & Senses
Rock Detectives Teacher Guide
Pacing: 30–40 Mins
Small Group / Whole Class
Learning Goals
- Use touch and sight to describe rocks (smooth/rough, shiny/dull).
- Sort real rocks into groups based on observable properties.
- Draw and record findings on the Rock Explorer Journal.
Materials Checklist
- 4–6 diverse rocks per table (smooth river rock, granite, pumice, slate)
- Laminated Rock Sorting Mats (provided in bundle)
- Hand magnifiers & Rock Explorer Journal sheets
- 1 "Mystery Feely Bag" for the hook
Instructional Sequence
Hands-On Inquiry Model
STAGE 1 5 MIN
The Feely Bag
Pass a cloth bag with one mystery rock. Children reach in without looking: Is it warm or cool? Rough or smooth?
Key: Build curiosity!
STAGE 2 10 MIN
Free Exploration
Distribute rock trays and hand lenses. Children touch, tap gently, rub against cheek, and view specks/stripes up close.
Key: Use all 5 senses (no tasting!).
STAGE 3 12 MIN
Guided Sorting
Place the Rock Sorting Mats on tables. Challenge pairs: "Find all rocks that feel like glass (smooth), then rocks that feel like sandpaper (rough)."
Key: Test, justify, and re-sort.
STAGE 4 8 MIN
My Pet Rock Log
Each student selects their favorite "pet rock" from their tray to sketch, touch, and complete their Rock Explorer Journal.
Key: Individual reflection.
Target Touch & Sight Vocabulary
Smooth: Feels like ice or a spoon
Rough: Scratchy like sandpaper
Shiny: Catches light, twinkles
Dull: Flat color, no sparkle
Speckled: Tiny polka dots / spots
Striped: Lines of different colors
Teacher Talk Moves & Questions
- "Close your eyes. Rub this rock on your palm. Does it tickle or scratch?"
- "Hold one rock in each hand. Does one feel heavier like an apple?"
- "Why did you place that rock in the shiny circle instead of the dull one?"
Kindergarten Safety & Support Notes
Safety: Rocks stay on the sorting mats or trays at all times. Remind students: "Rocks are for touching gently, not for throwing or tasting." Have students wash hands after the lesson.
Differentiation: For children needing sensory regulation, provide smooth river stones first. For advanced learners, challenge them to sort by two rules simultaneously (e.g., "Find rocks that are both rough AND dark").
Rock Sorting Mats Activity
Science Center Mat 1
Touch & Feel Rock Sorting Mat
Detective Team:
Mission: Gently rub each rock with your fingers. Place smooth rocks on the left and scratchy rocks on the right!
SMOOTH
Feels like an egg or a spoon
Silky & Flat
No sharp bumps • Slips easily across your palm
Place Smooth Rocks Here
1
Rock Pad
2
Rock Pad
3
Rock Pad
4
Rock Pad
River rocks, polished pebbles, ocean stones
ROUGH
Feels like scratchy sandpaper
Bumpy & Sharp
Scratchy texture • Has ridges, holes, or jagged edges
Place Rough Rocks Here
1
Rock Pad
2
Rock Pad
3
Rock Pad
4
Rock Pad
Pumice, granite, gravel, broken sandstone
Partner Talk Prompt: "Which rock feels the smoothest of all? Can you find its twin?"
Page 1 • Texture
Science Center Mat 2
Look & Shine Rock Sorting Mat
Detective Team:
Mission: Hold your rock under the light or near the window. Does it sparkle or stay calm and earthy?
SHINY
Catches light or sparkles
Glimmers
Look for glittery specks, crystals, or glassy shine
Place Shiny Rocks Here
A
Sparkle
B
Sparkle
C
Sparkle
Crystals, quartz, polished pyrite, mica specks
DULL
No shine or sparkle
Matte Color
Looks flat like dry mud, chalk, or clay
Place Dull Rocks Here
1
Quiet
2
Quiet
3
Quiet
Chalk, limestone, sandstone, clay rocks
Bonus Detective: Rock Patterns
Look closely with your magnifying glass for special marks!
Magnifier Station
STRIPED
Color lines or bands
Rock Pad
SPECKLED
Tiny dots like freckles
Rock Pad
ONE COLOR
Solid color all over
Rock Pad
Detective Question: "Can a rock be both smooth AND shiny? Try to find one!"
Page 2 • Luster & Patterns
Rock Explorer Journal Worksheet
Kindergarten Science Journal
My Rock Explorer Log
Name:
Date:
1
Draw Your Favorite Rock
Show its real colors, spots, or stripes!
2
Circle What You Sensed
Choose one in each box
Touch / Feel
SMOOTH
ROUGH
Look / Shine
SHINY
DULL
Weight
HEAVY
LIGHT
3
Write About Your Rock
Emergent Writing Stem
Word Bank:
smooth rough shiny dull gray brown
My rock is and .
Certified Rock Detective
I used my senses to explore Earth's treasures!
Teacher Star: ★ ____