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.
By Laura Hospitál