Using a mineral identification kit to ID mystery rocks!

Today, our classroom transformed into a mineral identification lab! Students were excited to examine a collection of "mystery rocks," each with its own unique set of clues. To discover what was inside these hidden specimens, they put their geology skills to the test with a series of exciting experiments. 

Testing the Clues:

Color:.

A classic first step! Students carefully observed the color of each mineral.

Hardness:.

Using the Mohs Hardness Scale, they tested how easily a mineral could be scratched, revealing its strength. 

Streak:.

They rubbed each rock on a streak plate to see the color of its powder, a key identifier. 

Luster:.

Students observed how the minerals reflected light, learning about metallic and non-metallic types of luster. 

Magnetism:.

A simple but effective test for certain minerals, they used a magnet to see which rocks were attracted to it. 

Fluorescence:.

Under a special light, some rocks glowed, adding another fascinating layer to their investigation!

Learning the rock cycle with Starbursts!

My class recently got a lot tastier, thanks to a hands-on lesson about the rock cycle. We used Starburst candies to explore how the three main types of rocks—sedimentary, metamorphic, and igneous—are formed right in the classroom.

The journey of a candy rock...

Our junior geologists started with three different colored Starbursts, which represented the different kinds of sediments that exist in nature.

1. Sedimentary Rock: First, the students tore their candies into small, colorful shreds to mimic how natural forces like wind and water break down larger rocks into sediment over time. Then, they pressed their "sediments" together tightly, forming distinct layers just like a real sedimentary rock.
2. Metamorphic Rock: Next, using the heat from their hands and a little extra pressure, the students rolled and squeezed their rocks. The colors began to twist and blend, showing how heat and pressure deep within the Earth can morph one type of rock into another.
3. Igneous Rock: The final, and most exciting, step involved the microwave. We briefly melted the metamorphic rock in the microwave. The candies bubbled up, transforming into a gooey, molten magma. As the candy cooled and hardened, it became a brand new igneous rock—shiny, bubbly, and completely different from its original form.

Our class learned that the rock cycle is a never-ending journey, and their final igneous rock can one day be weathered down to become sediment again, starting the whole process over. And the best part? They got to eat their experiments!

Rock Scavenger Hunt

This week, my observant 3rd graders embarked on an exciting outdoor adventure – a rock scavenger hunt right here on school grounds! They were tasked with finding a variety of rocks, focusing on different shapes, sizes, textures, and colors. This hands-on approach allowed them to truly observe and appreciate the geology hidden in plain sight. 

Armed with their scavenger hunt checklists and magnifying glasses, the students explored the school grounds. It was wonderful to see their enthusiasm as they discovered everything from smooth, rounded river stones to rough, jagged pieces of concrete.

We even had a few unique finds that sparked some serious scientific curiosity! One group uncovered a beautifully banded chert, and another found a fascinating rock with sparkly bits – perhaps mica or quartz! 

This activity wasn't just about finding rocks; it was about fostering observation skills, encouraging scientific inquiry, and getting our bodies moving outdoors. 

Check out some of the cool rocks they found!

Rocks, crystals, and gemstone exploration!

Last week, my 3rd-grade explorers embarked on an exciting adventure into the world of rocks, minerals, and crystals! They examined over 200 different specimens, each with its unique characteristics.

With the aid of magnifying glasses, these young geologists meticulously examined the intricate patterns and dazzling hues of each specimen. 

Among the collection, one specimen particularly captivated their attention: a fossilized shark tooth. The students were fascinated by its sharp edges, unique shape, and dark color. This exciting find sparked discussions about prehistoric life and the process of fossilization (the next day, we actually made our own fossils).

Many students quickly found a favorite among the collection on stones. Each was excited to show me their find, as well as point out its unique characteristics. Some details that were noticed were shininess, magnetic pull, crystal formation, stripes, metallic appearance, and vibrant colors. It was a good day to be a geologist!