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It should be noted that teachers may have to edit the introductory materials provided to students, since the readings may be too difficult for younger middle school students.

In order to recognize and make sense of these patterns, students must use the Scientific Practice of Analyzing and Interpreting Data, especially in regards to temporal relationships.

What a fun and creative way to wrap up a unit and take some learning home.

In order to align this activity more closely to this practice, teachers should require students to explain and justify each step of their timeline.

Marble from limestone, a sedimentary rock and granulite from basalt, an igneous rock are examples of metamorphic rocks.

The activity uses scientifically accurate and grade-appropriate information in laying the groundwork for an examination of how fossils can be used to organize rock strata; however, no guidance is provided for differentiation.

The root word also lends itself to other geologic terms.

Sedimentary rocks form as more-or-less horizontal layers because of the way in which sediment, sand, mud, rock debris, shell fragments and so on, is deposited.

And geologists sometimes refer to something formed in layers as a stratiform deposit.

is a lesson plan that strongly incorporates all three dimensions of the NGSS.

Only one sequence is correct for each activity, but the answer is easily achievable if students can recognize the relationships detailed in the cards.