ACTIVITY SUMMARY. Category- ( Eco, Arts and Crafts, Health) Eco and Crafts

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1 ACTIVITY SUMMARY Name of Activity Category- ( Eco, Arts and Crafts, Health) Crystal Egg Geodes Eco and Crafts Short description of the proposed activity, including any unique factors about the activity. Kids make Crystal Egg Geodes Goals and intended results of the activity. Lessons that the activity teaches. Participants learn about crystallization process while doing a cool craft. Best Age Group- 3rd-7th grade Type of space needed- Indoor Estimated Duration- 1:17:00 Estimated Activity Budget лв

2 ACTIVITY SUPPLY LIST The supply list includes all necessary items needed for the activity. The activity supplies are for a group of 10 participants. Add or subtract supplies depending on size of group. ACTIVITY STAFF LIST This list specifies what kind of staff might be helpful in the implementation of the activity. Include knowledgeable people (specialist) that may be helpful for the implementation of the activity. For Example: If you are doing an eco activity about the function of plant roots, the biology teacher or local forest ranger would be a great resource to come and help. Supply Quantity Where can the supply be Purchased/Found Staff Quantity Assignment 1 Blown Out Eggshells 20 bring from home 1 Supervisor/Leader 2 Explain and monitor activity 2 Alum Powder 1 Hardwear store 2 3 White Glue 2 Euroland or bookstore 3 4 Small Paintbrush 10 bookstore 4 5 Plastic or Glass Container 5 bring from home 5 6 Egg Dye 1 food store 6 7 Hot Water 7 8 Spoon 2 food store 8 9 Latex Gloves 10 Hardwear store 9 10 Newspaper 1 bring from home Paper Clip 2 bookstore Needle 2 fabric store

3 ESTIMATED ACTIVITY BUDGET The budget below is to be used for planning the cost of the activity. The materials are calculated for a group of 10 participants. (Costs may vary) Unit Cost (BGN ЛВ) Total Cost (BGN ЛВ) Activity Material Unit Quantity 1 Blown Out Eggshells лв лв. 2 Alum Powder лв лв. 3 White Glue bottle лв лв. 4 Small Paintbrush лв лв. 5 Plastic or Glass Container лв. 6 Egg Dye лв лв. 7 Hot Water лв. 8 Spoon лв лв. 9 Latex Gloves лв лв. 10 Newspaper лв лв. 11 Paper Clip лв лв. 12 Needle лв лв лв лв лв. Total Cost лв

4 ACTIVITY INSTRUCTIONS The instructions below are to be used as a guide for implementing the activity. If there are photos, instruction sheets, worksheets, etc. there is a note "See additional materials ". These materials are located at the end of the activity. The "Time " column gives the estimated duration of each step of the activity. Step 1 Discuss Geodes - Where you find them and how they form. Step 2 Blow out chicken egg so that only the shell remains. (to do this: poke a hole in the bottom of the egg with you needle. Slip the unfolded paper clip through the hole and pierce the yolk. Use the paper clip to mix the yolk into the egg white. Pierce the top of the egg with the needle tip. Blow into the egg, forcing the egg insides out the bottom of the hole. Step 3 Split the egg shell in half, lengthwise (the egg can be cracked by striking it against a surface or cut with a small pair of scissors). Make sure the inside of the eggshell is clean and dry. Step 4 With a small paintbrush, apply whit glue to the inside and cracked edges of each half of the eggshell and sprinkle with alum powder until completely coated. Set eggshell halves aside to dry overnight. Step 5 0:07:00 0:10:00 0:05:00 0:10:00

5 ACTIVITY DISCUSSION QUESTIONS The discussion questions below are intended to engage leaders and participants to further discuss the lessons learned from the activity. The aim in providing discussion questions is to enhance the participant experience. Question 1 What is a Geode? (answer: Geodes are rocks that are plain on the outside but can have beautiful crystals on the inside. In the Greek language, geode means "shape of the earth", and geodes are round like earth or oblong like an egg. They can be a couple inches or several Question 2 How do Geodes form? (answer: Geodes are created in the hollow areas of soil such as animal burrows or tree roots. They are also formed in the bubbles in volcanic rock. Over time, dissolved minerals seep into a hollow area and harden into an outer shell creating the geode. The minerals continue to form on the inside walls of the shell, growing towards the center. The most common dissolved mineral is quartz, but amethyst and other minerals are also found. It can take hundreds of millions of years for the space inside a geode to be filled, and many geodes remain partly hollow. A geode which is completely filled with crystals is called a nodule. Agate-filled nodules are called thunder eggs). Question 3 How do Geodes get their color? (answer: Geodes can have many colors depending upon the type of crystal. Purple is a typical color for amethyst. Because crystals have flat, clear surfaces with many facets, they reflect light and have a beautiful sparkle). Question 4 How could you make the color purple or pink or green in your crystal egg geode?

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