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How to Make Magic Leprechaun Rocks for St. Patrick’s Day

St. Patrick’s Day science can be easy and fun! Just grab baking soda, water, and green food coloring, and you are ready to make magic leprechaun rocks.

Green vinegar being poured over magic leprechaun rock for St. Patrick's Day science

The Science Behind Magic Leprechaun Rocks

This is a fun twist on the experiment using baking soda and vinegar. Baking soda is a base, and vinegar is an acid. When the two ingredients mix, they react and release bubbles, aka carbon dioxide. The fizzing and bubbles bring the magic to this St. Patrick’s Day science activity.

Let’s Make Magic Leprechaun Rocks

Making magic leprechaun rocks is quick and requires only a few ingredients. Warning: It can be messy, but it also brings out your inner child!

Baking soda, vinegar, green food coloring, and coins to make magic leprechaun rocks

Materials:

  • Baking Soda
  • Green Food Coloring/ Green Watercolor
  • Water
  • Gold Coins
  • Vinegar
  • Measuring Cups
  • Cookie sheet/tray
  • Mixing Bowl

How to Make:

Once you have gathered all the ingredients, you are ready to begin. First, mix green food coloring or green liquid watercolor with the water. You’ll need 1 cup of baking soda for every 1/4 cup of water. Mix the baking soda and water until it becomes a moldable thick paste. If it seems too runny, add more baking soda; if it’s too crumbly, slowly add more water.

Mixing baking soda with green water, rolling the mixture into a ball with a gold con in the middle, and placing the rocks onto a cookie sheet to dry   to make magic leprechaun rocks

Now it’s time to shape the rocks! If you don’t want green hands, wear gloves…I learned the hard way! Carefully shape the rocks by adding a scoop of the paste, then a coin, topped with more paste. Squeeze and roll it into a ball shape. Finally, I place them onto a parchment-lined cookie sheet to dry. They need 1-2 days to dry, but you can also speed it up by placing them in the freezer.

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A post shared by Kristin (@rhodygirlresources)

While my students are at lunch or specials on St. Patrick’s Day, I sneak outside and spread the leprechaun rocks in the grass. When my students return to the classroom, they find a note left behind by the leprechauns. This note sends students out to hunt for leprechaun rocks and explains that using the leprechaun water on the rocks will reveal a surprise!

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A post shared by Kristin (@rhodygirlresources)

The bubbling reaction when the baking soda and vinegar mix are mixed will result in squeals of excitement, followed by absolute joy when they reveal the gold coin!

Tip and Tricks for Magic Leprechaun Rocks

There are several different ways you can do this activity. One way is to have a large bucket or bowl filled with leprechaun water and have students drop the leprechaun rocks into it. I like to let each student do their own.

I give each student a cup to place their magical leprechaun rock in. Then, I give each student a small cup of leprechaun water (green vinegar) to pour over their rock. You could also have them use droppers to slow down and stretch out the fun!

A coin being pulled out of a cup after St. Patrick's Day science.

The leprechaun water can be colored vinegar placed into a special container, or if you want to press the easy button like me, take the label off the bottle of vineger!

Looking for additional St. Patrick’s Day ideas? In the blog post, Bringing Excitement and Fun With St. Patrick’s Day for Kindergarten, I share ideas on integrating math, STEM, writing, and more!

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Filed Under: Holidays, St. Patrick's Day, Teaching Resources, Uncategorized Tagged With: holidays in the classroom, science, St. Patrick's Day

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Let’s keep these dollar deals going into the new year!! Search #2024deals on Teachers Pay Teachers January 1-2 to check out my Winter Would You Rather Brain Breaks, CVC Secret Code Worksheets, and hundreds of other resources marked down to $1.#cvcwordsactivities #cvcwords #wouldyouratherquestions #wouldyourather #teacherresources #teacherdeals #tptsales #elementaryteacher #phonicsactivity #kindergarten #firstgrade ... See MoreSee Less

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Let’s ring in the New Year with some dollar deals!!! Search #toast23 on Teachers Pay Teachers to find hundreds of resources marked down to a dollar. Ive included my Minute to Win It Games and Word Mapping Worksheets. Minute to Win It Games are perfect for a classroom reward, for classroom parties, or as a community building activity. Word Mapping supports the science of reading and works great in small groups, as a follow up to a phonics lesson, or as a literacy center. #kindergartenteachers #firstgradeteachers #teacherdeals #teacherresources #phonicsactivity #minutetowinitgames ... See MoreSee Less

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  • Happy 100th Day!! Have you celebrated the 100th day already?

We spent the day:
⭐️ Sharing what we would buy with $100
⭐️ Getting out our wiggles with 100th Day Would You Rather questions
⭐️ Reading books about 100
⭐️ Making Crowns
⭐️ Brainstorming 100 ways to make 100
⭐️ STEM building with 100 objects

And more!

What’s your favorite activity to do on the 100th day?

#100thdayofschool #100thdaycelebration #secondgradeteacher #secondgrade #secondgraderocks
  • Happy 100th Day!! Have you celebrated the 100th day already?

We spent the day:
⭐️ Sharing what we would buy with $100
⭐️ Getting out our wiggles with 100th Day Would You Rather questions
⭐️ Reading books about 100
⭐️ Making Crowns
⭐️ Brainstorming 100 ways to make 100
⭐️ STEM building with 100 objects

And more!

What’s your favorite activity to do on the 100th day?

#100thdayofschool #100thdaycelebration #secondgradeteacher #secondgrade #secondgraderocks
  • Happy 100th Day!! Have you celebrated the 100th day already?

We spent the day:
⭐️ Sharing what we would buy with $100
⭐️ Getting out our wiggles with 100th Day Would You Rather questions
⭐️ Reading books about 100
⭐️ Making Crowns
⭐️ Brainstorming 100 ways to make 100
⭐️ STEM building with 100 objects

And more!

What’s your favorite activity to do on the 100th day?

#100thdayofschool #100thdaycelebration #secondgradeteacher #secondgrade #secondgraderocks
  • Happy 100th Day!! Have you celebrated the 100th day already?

We spent the day:
⭐️ Sharing what we would buy with $100
⭐️ Getting out our wiggles with 100th Day Would You Rather questions
⭐️ Reading books about 100
⭐️ Making Crowns
⭐️ Brainstorming 100 ways to make 100
⭐️ STEM building with 100 objects

And more!

What’s your favorite activity to do on the 100th day?

#100thdayofschool #100thdaycelebration #secondgradeteacher #secondgrade #secondgraderocks
  • Happy 100th Day!! Have you celebrated the 100th day already?

We spent the day:
⭐️ Sharing what we would buy with $100
⭐️ Getting out our wiggles with 100th Day Would You Rather questions
⭐️ Reading books about 100
⭐️ Making Crowns
⭐️ Brainstorming 100 ways to make 100
⭐️ STEM building with 100 objects

And more!

What’s your favorite activity to do on the 100th day?

#100thdayofschool #100thdaycelebration #secondgradeteacher #secondgrade #secondgraderocks
  • Happy 100th Day!! Have you celebrated the 100th day already?

We spent the day:
⭐️ Sharing what we would buy with $100
⭐️ Getting out our wiggles with 100th Day Would You Rather questions
⭐️ Reading books about 100
⭐️ Making Crowns
⭐️ Brainstorming 100 ways to make 100
⭐️ STEM building with 100 objects

And more!

What’s your favorite activity to do on the 100th day?

#100thdayofschool #100thdaycelebration #secondgradeteacher #secondgrade #secondgraderocks
  • What’s one of your favorite places in your classroom?

Mine is my small group table, which also serves as my desk. So much happens in this little space. I feel like you can learn so much about your students working with them one on one or in small groups, and the connections are made even stronger here. 

#secondgrade #secondgradeclassroom #secondgradeteacher #smallgroupteaching #classroompic #classroomspace #iteachsecond
  • A few little snippets from our day in second grade!

Comment to let me know what you’d like to see more of or know more about. 

#secondgradeteacher #secondgrade #teachersofinstagram #classroomroutines #teacherlife #teacherday #lifeintheclassroom
  • This was the perfect way to transition back after winter break. It got my students up and moving and allowed us review classroom expectations. 

#teachingideas #brainbreak #movementbreak #classroomexpectations #classroomrules #iteachtoo #teachersofinstagram

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