different kinds of rocks
Activity

Modeling Rock

Hands-on activity for students who are blind or visually impaired to learn about the three types of rock found in the Earth.

Students begin to learn about the three types of rock found in the Earth in elementary school.  These three types of rock are:

The following mini-lab is appropriate after students have learned about the types of rock.   This simple hands-on activity gives students an opportunity to “create” sedimentary rock.  It requires only about 20 minutes to complete.  If a simple balance or a triple beam balance is utilized instead of an electronic balance, it may add 20 minutes to the time necessary.    This activity is from the Glencoe Science – 8th grade book, 2002.   It has been adapted to allow the rock to harden more quickly.

NOTE:  I would not recommend having the students measure the glue as it is quite messy.  A small container of glue has enough glue for 3 groups.  The student should add the glue WITH teacher supervision so as not to add too much.   Grade 8 Science Try at Home Mini-lab-Modeling rock   NOTE:  I would not recommend having the students measure the glue as it is quite messy.  A small container of glue has enough glue for 3 groups (about 120mL)  The teacher should add the glue.   The students should measure the sand either on an electronic balance, a simple balance, or a triple beam balance.    Please see the following links for instructions on adapting a simple balance and a triple beam balance

  1. Mix 40 mL of white glue with 40 g of sand in a paper cup.
  2. Stir the mixture and then allow it to harden overnight.
  3. Tear away the paper cup carefully from your mixture.

Analysis

  1. Which rock type is similar to your hardened mixture?
  2. Which part of the rock cycle did you model?

By Laura Hospitál

Attached File(s)

https://www.perkins.org/wp-content/uploads/elearning-media/9.1%20Mini-Lab%20-%20modeling%20rock%20RP.doc

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