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Geodes for Splitting (package of 6) NGSS

SKU #RM-540
Availability: In Stock
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These whole, unopened geodes and can be easily split open, using an ordinary hammer, to reveal a variety of crystal formations within.

Description

These whole, unopened geodes are an exciting addition to any earth science, geology, or rock & mineral unit. Sorted by density, many are hollow and can be easily split open, using an ordinary hammer, to reveal a variety of crystal formations within. Students love opening these, then trading the pieces to begin their own rock collections. Our favorite way to split them is to put one in an old sock, then strike it with a hammer outside. This keeps all the pieces together while protecting bystanders from any fragments. Remember to wear your safety goggles. Sold in packages of 6.
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Reviews

3 reviews
Surprising Geodes!
Review star icon Review star icon Review star icon Review star icon Review star icon Jul 30, 2013
5 of the 6 contained crystals. The anticipation opening each one was wonderful.
John R. Smith

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Solid Fun!
Review star icon Review star icon Review star icon Review star icon Review star icon Mar 22, 2013
I bought 80 of these and broke them open with all of my 4th graders. We had about 5 that were solid rock with no crystals inside, but were still very cool to show the kids. Each student took one home and had a great time as I broke them open one-by-one (some were almost too hard for me to break).
Kelly

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Science facilitator & instructor
Review star icon Review star icon Review star icon Review star icon Review star icon May 25, 2012
My little 'rock hounds' couldn't get of this engaging, exciting activity.
Lisa Dizengoff

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NGSS

This product will support your students' understanding of the Next Generation Science Standards (NGSS)*, as shown in the table below.

Elementary Middle School High School

2-PS1-1

Students can use Geodes to plan and conduct an investigation to describe and classify different kinds of materials by their observable properties.

2-ESS1-1

Students can make observations of geodes and use information from media to construct an evidence-based account that Earth events can occur quickly or slowly.

5-PS1-3

Students can use geodes to make observations and measurements to identify materials based on their properties.

MS-ESS2-1

Students can make observations of geodes as part of an investigation to develop a model to describe the cycling of Earth's materials and the flow of energy that drives this process.

HS-ESS1-5

Students can make observations of geodes of the past and current movements of continental and oceanic crust and the theory of plate tectonics to explain the ages of crustal rocks.

Suggested Science Idea(s)

2-PS1-1
5-PS1-3

Students can smash the Geodes to reveal the inner crystal or rocky structures. A great opportunity to describe and classify different kinds of materials by their observable properties.

2-ESS1-1

Students can make observations of geodes to look for crystals. If there are well-formed, large crystals, the rock shows evidence of a slow process. If it is filled with ash, it shows evidence of faster cooling.

MS-ESS2-1
HS-ESS1-5

Students can make observations of geodes as part of a study of Earth's geologic history.

 

* NGSS is a registered trademark of Achieve. Neither Achieve nor the lead states and partners that developed the Next Generation Science Standards were involved in the production of, and do not endorse, this product.

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