Share Your Rock Collection
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Organize and photograph your rock collection, identify common types with a guide, label each specimen, and create a simple display to share.

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Step-by-step guide to share your rock collection

What you need
Adult supervision required, colouring materials (optional), paper and scissors, permanent marker or pen, rock collection, rock identification guide or book, soft cloth, sticky notes, tape, tray or shoebox or display board

Step 1

Gather all your rocks into one clean spot so you can see them all at once.

Step 2

Use the soft cloth to gently wipe dirt off each rock so the colors and patterns show.

Step 3

Sort your rocks into piles by color so similar-looking rocks stay together.

Step 4

Use the rock identification guide to identify the type of one rock from each pile.

Step 5

Write the rock type name on a sticky note with your marker for each identified type.

Step 6

Attach the correct sticky note next to or on each rock so every specimen has a label.

Step 7

Arrange the labeled rocks neatly on your tray or display board grouped by type.

Step 8

Make a title card on paper with your collection name and tape it to the display.

Step 9

Take clear photos of your whole display and a close-up of any special rocks for sharing.

Step 10

Write a short note about your favorite rock and one thing you learned from the guide.

Step 11

Upload your photos and note and share your finished rock collection on DIY.org.

Final steps

You're almost there! Complete all the steps, bring your creation to life, post it, and conquer the challenge!

Complete & Share
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Help!?

What can we use instead of the soft cloth or sticky notes if we can't find them?

Use a clean old T‑shirt or damp paper towel to gently wipe each rock and label specimens with small pieces of masking tape or cut paper taped next to each rock.

My sticky notes keep falling off and my close-up photos are blurry — how can I fix that?

Secure each sticky note with a little tape when you 'Attach the correct sticky note' and take photos in daylight on a flat surface using a steady hand or phone stand for the 'Take clear photos' step.

How can I change the activity for younger children or make it more challenging for older kids?

For younger kids, sort into three color piles and have an adult write rock names on the sticky notes, while older kids should use the rock identification guide to research each specimen and make a detailed title card and data sheet.

What are some ways to personalize or extend our rock display before uploading to DIY.org?

Add a magnifying glass next to special rocks, tape a small map of where each rock was found onto the tray, and record a short video tour to include with the photos and note when you 'Upload your photos and note' to DIY.org.

Watch videos on how to share your rock collection

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National Geographic Rock Tumbler!

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Facts about rocks and minerals

🔍 All rocks belong to three main types: igneous (from lava), sedimentary (layered), or metamorphic (changed by heat and pressure).

📸 Always include a ruler or coin when photographing a specimen — scale makes ID and comparisons much easier.

🚫 Collecting is fun, but many national parks and museums forbid removing rocks—always check local rules first.

🪨 Some rocks are over 4 billion years old — older than most continents!

🧭 You can test a mineral's hardness at home with a fingernail, a penny, or a piece of glass (that's the Mohs scale in action).

How do I organize and photograph my rock collection?

To organize and photograph your rock collection, start by gently cleaning each specimen with a soft brush and water, then sort rocks by size, color, or type. Number each rock and record notes in a notebook. Place specimens on a neutral background with a ruler for scale and use natural light or a window. Take several photos from different angles and include a close-up and a labeled shot. Finally, back up images and match photos to your numbered list.

What materials do I need to identify and label each rock?

You'll need a field guide or identification app, a magnifying glass, a soft brush and water for cleaning, a ruler for scale, small labels or sticky dots and a permanent marker, resealable bags for storage, a notebook or spreadsheet for notes, a camera or smartphone, and a simple display box or tray. Optional items for older kids include a jeweler's loupe, pH strips, or a basic rock test kit.

What ages is this activity suitable for?

This rock-sharing activity suits a wide age range. Ages 4–6 enjoy sorting, touching, and simple labeling with adult help. Ages 7–10 can clean, photograph, and use a field guide with supervision. Tweens and teens (11+) can research rock types, create digital catalogs, and design displays to share. Adjust tasks and supervision for fine-motor skills, use of tools, and online sharing. It scales well for family participation.

What are the benefits and safety tips for sharing a rock collection?

Benefits include learning geology basics, improving observation and organizational skills, practicing photography, and building confidence when presenting. Safety tips: wash hands after handling, avoid putting small pieces in the mouth, supervise children when using tools, check for sharp edges, and never use strong acids at home. For sharing, get parental permission before posting photos online and consider a school display or slideshow as a safer alternative.
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