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A Relative Dating Activity is a hands on exercise which activith students to the concepts of sequencing and using fossils to establish relative datung for rock strata. In the first part of the activity, students are asked to sequence cards by identifying dwting ordering overlapping letters found on the cards.
In the second part of the activity, students progress to dating rock relative dating activity middle school by sequencing fossils found in the different strata. Using the results of these activities, teachers can then lead reltive in a discussion of the Law schol Superposition and the identification and value of index fossils. Relatibe 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.
Both parts of the activity can be completed in one class period. MS-ESS Construct a scientific explanation based on evidence from rock strata for how the geologic time scale is used to organize Earth's 4. Examples activihy include the formation of mountain chains and ocean basins, the evolution or extinction of particular living organisms, or significant volcanic eruptions. Assessment does not include recalling the names of specific periods or epochs and events within them.
This resource is explicitly designed to towards this performance expectation. Teachers should note that the stratigraphic information provided for the second part of the activity is purely hypothetical; however, this relative dating activity middle school still a valuable exercise since its successful completion will activiy teachers to initiate a discussion on the Law of Superposition and index fossils without overwhelming students with too many details.
In particular, these activities allow students to explore the portion of the Clarification Statement dealing with relative dating activity middle school evolution or extinction of particular living organisms by pinpointing when specific fossils appear and disappear in the strata record. This resource is explicitly designed to build towards this science and engineering practice.
Comments about Including the Science and Engineering Practice In this activity, students are tasked with constructing a timeline using fossils. In order to align this activity more closely to this practice, teachers should require students to explain and justify each step of their timeline. Relative dating activity middle school example, relative dating activity middle school should discuss which fossils are making their first appearance in a particular segment and which fossils have disappeared.
In rekative, students should discuss which, if any, of the fossils in a particular segment could be utilized as an index fossil. Once these answers are shared and evaluated, students would be prepared for a discussion of the Law of Superposition. This resource is explicitly designed to build towards this disciplinary core idea. Comments about Including the Disciplinary Core Idea In this activity, students construct their fossil timeline simply by identifying overlapping fossils in the schpol it is only after students construct their records that teachers are instructed to provide Figure actlvity which illustrates a hypothetical section of rocks with fossils.
To bring zctivity activity more in line with the Disciplinary Core Idea, teachers may wish to redesign the materials provided the students zchool cutting up FIgure 2-B and instructing students to organize these pieces instead. Because Figure 2-B shows the fossils already embedded in rock strata, the relationship between fossils and rock strata is strengthened.
To align more closely to the Disciplinary Core Idea, teachers may also want to incorporate the Relative Dating Activity http: This resource appears to be designed to build towards this crosscutting concept, though the resource developer has not explicitly stated so. Only one sequence is correct for each activity, but the answer is easily achievable if students can recognize the relationships detailed in the cards. The major difficulty that students may encounter is the concept that extinction is forever.
Once a species disappears, it cannot make a comeback at a later date or, daitng this case, card. Again, this exercise is only hypothetical but the experience provided to students can be transferred to actual rock data. The activity helps students to understand that long spans of geologic time can be broken down into more manageable segments by using relative ages.
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