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PerfectCast Casting Medium NGSS

SKU #FSL-315
Availability: In Stock
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The professional's choice for casting complex fossil replicas.
4 lbs.

Description

Far better than ordinary plaster, PerfectCast is the professional's choice for casting complex fossil replicas. Simply add to water. PerfectCast dries as quickly as Plaster of Paris and is five times as strong. It is AP nontoxic and reproduces intricate detail identical to the original mold. Sold in four-pound bags. One bag will make about 20 large 4 inch T-Rex teeth.
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2 reviews
best molding material
Review star icon Review star icon Review star icon Review star icon Review star icon Jun 26, 2015
Perfect cast is strong and does not break when you are removing it from the mold.
Mary-Anne Richards

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PerfectCast
Review star icon Review star icon Review star icon Review star icon Review star icon Mar 21, 2013
Product was easy to use. Set quickly and easy to clean.
Sandra Gilchrist

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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

4-ESS1-1

Students can use the PerfectCast Casting Medium with Fossilworks (FSL-250) or clay and the assorted fossils in the Fossil Sorting Kit to create fossil models. Students can use the models to identify evidence, to identify patterns in rock formations and fossils in rock layers to support an explanation for changes in the landscape over time.

DCI-4/ESS1.C: The History of Planet Earth.

Local, regional, and global patterns of rock formations reveal changes over time due to earth forces, such as earthquakes. The presence and location of certain fossil types indicate the order in which rock layers were formed.

MS-ESS1-4

Students can use the PerfectCast Casting Medium with Fossilworks (FSL-250) or clay and the assorted fossils in the Fossil Sorting Kit to create fossil models. Students can use the models as evidence to construct a scientific explanation based on the fossil record from rock strata for how geologic time scale is used to organize Earth's 4.6-billion-year-old history.

MS-LS 4-1

Students can use the PerfectCast Casting Medium with Fossilworks (FSL-250) or clay and the assorted fossils in the Fossil Sorting Kit to create fossil models. Students can use the models to analyze and interpret data for patterns in the fossil record that document the existence, diversity, extinction, and change of life forms throughout the history of life on Earth under the assumption that natural laws operate today as in the past.

MS-LS 4-2

Students can use the PerfectCast Casting Medium with Fossilworks (FSL-250) or clay and the assorted fossils in the Fossil Sorting Kit to create fossil models. Students can use the models to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.

DCI-MS/ESS1.C: The History of Planet Earth.

The geologic time scale interpreted from the rock strata provides a way to organize Earth's history. Analysis of rock strata and fossil record provide only relative dates, not absolute scale.

DCI-MS/LS4.A: Evidence of Common Ancestry and Diversity.

The collection of fossils and their placement in chronological order is known as the fossil record. It documents the existence, diversity, extinction, and change of many life forms throughout the history of life on Earth. By reviewing anatomical similarities and differences between various organisms living today and organisms in the fossil record, we can reconstruct evolutionary history and interference of lines of evolutionary descent.

HS-ESS1-4

Students can use the PerfectCast Casting Medium with Fossilworks (FSL-250) or clay and the assorted fossils in the Fossil Sorting Kit to create fossil models. Students can use the models to identify anatomical structures as evidence to communicate scientific information that common ancestry and biological evolution are supported by multiple line of empirical evidence.

HS-LS 4-5

Students can use the PerfectCast Casting Medium with Fossilworks (FSL-250) or clay and the assorted fossils in the Fossil Sorting Kit to create fossil models. Students can use the models in the Fossil Sorting Kit and information about the fossil record to evaluate the evidence supporting claims that changes in environmental conditions may result in the extinction of species.

DCI-HS/LS4.C: Adaptation.

Species become extinct because they can no longer survive and reproduce in their altered environment. If members cannot adjust to change that is too fast or drastic, the opportunity for the species' evolution is lost.

Suggested Science Idea(s)

4-ESS1-1
MS-ESS1-4
MS-LS 4-1
MS-LS 4-2
HS-ESS1-4
HS-LS 4-5

Students can use the PerfectCast Casting Medium with clay/putty and the assorted fossils in the Fossil Sorting Kit to create their own reproductions of the fossils. These fossil models allow students to look closely at the mold fossil formation process. The Precast Casting Medium, in conjunction with Fossilworks (FSL-250), allows students to make six different fossils using reusable seamless rubber molds.

Students can use the assorted fossils and Fossil Sorting Guide included in the Fossil Sorting Kit to gather information and evidence to support investigations for geologic history. With close examination and research about the fossils, students can learn about the fossil record, Earth's history, common ancestry, diversity of life and adaptation. Any hands-on activity with fossils will create a strong foundation for Geologic History lessons at all grade levels.

 

* 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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