Unit: Treasures of the Earth — Gems, Rocks & Minerals

Target Audience: Grade 1 (Age 7) | Context: Homeschool/Classroom/Neurodiverse Friendly

Lesson 1: Rock Detectives (The Science of Observation)

Objective: Students will identify physical properties of rocks and sort them based on observable characteristics.

Materials: A collection of 10-15 different rocks (smooth, rough, sparkly, plain), magnifying glasses, sorting trays (or paper plates), "Rock Detective" checklist, a mystery bag.

1. Introduction (The Hook)

Place a heavy rock inside a "Mystery Bag." Let the students feel the bag without looking. Ask: "Is it light or heavy? Is it soft or hard? Does it have corners?" Reveal the rock and explain that today we are scientists called Geologists!

2. Body (I Do, We Do, You Do)

• I Do: Explain that rocks aren't just "gray stones." Use a magnifying glass to show "clues" (sparkles, holes, stripes). Explain terms: Texture, Luster (shiny/dull), and Hardness.
• We Do: Together, pick up one rock. Ask the students: "Is this rock bumpy like a toad or smooth like an egg?" Sort three rocks into "Smooth" and "Rough" piles together.
• You Do: Give each student a tray of rocks. Ask them to sort their rocks by a category of their choice (Color, Size, or Shine). Then, have them choose their "Favorite Rock" and draw a picture of its tiny details using the magnifying glass.

3. Conclusion & Assessment

Recap: Ask: "What are three ways we can describe a rock?" (e.g., Shiny, heavy, red).
Success Criteria: Students can successfully sort rocks into at least two groups and describe one property of their favorite rock.

Differentiation:
• Scaffolding: Provide a visual "Choice Board" with pictures of "Smooth," "Rough," and "Sparkly" for the ASD student to point to.
• Extension: Ask the student to predict which rock would be the hardest to break and why.

Lesson 2: The Rock Cycle "Sandwich" (Science & Process)

Objective: Students will understand that rocks change over time and identify the three main types of rocks.

Materials: Three colors of playdough (or different sliced breads, jam, and sprinkles), heavy books, a warm lamp or hair dryer (adult use), visual cards for Igneous, Sedimentary, and Metamorphic.

1. Introduction (The Hook)

Ask: "Do rocks stay the same forever, or can they change like a caterpillar into a butterfly?" Explain that rocks are the ultimate recyclers!

2. Body (I Do, We Do, You Do)

• I Do: Use the playdough to demonstrate the three types:
  1. Sedimentary: Layers of "sand" (playdough) stacked up.
  2. Metamorphic: Squishing the layers with a heavy book (Pressure!).
  3. Igneous: Melting (symbolized by warming the playdough or showing a picture of a volcano).
• We Do: The "Sedimentary Sandwich." Have students stack different colored "layers" (bread/playdough/sand) to see how layers form over time. Tell them: "This is how fossils get stuck in rocks!"
• You Do: "The Great Squish." Have students use their hands or a book to apply "Pressure" to their layers. Observe how the colors blend but stay in lines. This is their Metamorphic rock!

3. Conclusion & Assessment

Recap: Have the students "act out" the rocks: Stand still (Sedimentary), Squish down small (Metamorphic), or "Explode" like a volcano (Igneous).
Success Criteria: Students can name one thing that changes a rock (Heat or Pressure).

Differentiation:
• Sensory: Use edible materials (bread/jam) for a tasty, high-engagement lesson for neurodiverse learners.
• Extension: Find a real Sedimentary rock outside and look for the lines/layers.

Lesson 3: Hidden Treasures (Minerals & Mining - Science/HASS)

Objective: Students will distinguish between rocks and minerals and explore how humans find "treasures" in the Earth.

Materials: Chocolate chip cookies (or "muffin" with blueberries), toothpicks, a "Gem Mining" kit (or a bowl of sand with hidden beads/crystals), photos of jewelry and computers.

1. Introduction (The Hook)

Show a piece of jewelry and a cell phone. Ask: "What do these have in common?" (Answer: They both use minerals from the ground!).

2. Body (I Do, We Do, You Do)

• I Do: The Cookie Analogy. A Rock is like a cookie—it's made of many things. A Mineral is like the chocolate chips—it's one specific "ingredient."
• We Do: "Cookie Mining." Give each student a toothpick and a cookie. Their job is to "mine" (extract) the chips (minerals) without breaking the "earth" (the rest of the cookie) too much. This teaches patience and the concept of resources.
• You Do: Sensory Bin Mine. Hide shiny beads or polished stones in a bin of sand/dried beans. Let students use sifters and tweezers to find the "gems."

3. Conclusion & Assessment

Recap: Ask: "Is a mineral an ingredient or the whole cookie?"
Success Criteria: Students identify that minerals are found inside rocks and are used for things we use every day.

Differentiation:
• Fine Motor: Use larger "minerals" (big blocks) for students who struggle with toothpicks.
• Extension: Sort the "minerals" found in the sand by their level of "sparkle."

Lesson 4: Rocks in Our History (HASS & Culture)

Objective: Students will explore how people throughout history used rocks for tools, art, and storytelling.

Materials: Smooth flat stones, washable paints or chalk, photos of cave paintings and stone tools (arrowheads/grinding stones), a small stick.

1. Introduction (The Hook)

Hold up a stick and a rock. Ask: "Before there were grocery stores or toy shops, how did people make things?" Show how a rock can be a hammer, a knife, or a paintbrush.

2. Body (I Do, We Do, You Do)

• I Do: Show pictures of ancient cave paintings. Explain that people ground up colorful rocks (minerals) to make paint. Show pictures of stone houses and statues.
• We Do: "Story Stones." Look at a rock's shape and imagine what it looks like. Does this rock look like a heart? A cloud? A turtle? Tell a 2-sentence story about it.
• You Do: Create a "History Rock." Students paint a symbol or a picture on a smooth stone that represents their family or a favorite memory. They are making an "artifact" just like people did thousands of years ago.

3. Conclusion & Assessment

Recap: Ask: "What is one tool we can make from a rock?"
Success Criteria: Students complete a "History Rock" and explain why rocks were important to people in the past.

Differentiation:
• Engagement: For the ASD student, provide "dot markers" instead of brushes if they prefer less messy tactile input.
• Extension: Try "writing" on a sidewalk with a softer rock (like limestone or slate) to see how rocks can be used as pencils.