Level 1

Alaska Science
Key Element A13

A student who meets the content standard should understand the theory of natural selection as an explanation for evidence of changes in life forms over time (Evolution and Natural Selection).


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Performance Standard Level 1, Ages 5–7

Students describe organisms that once lived on Earth, but have completely disappeared.

Sample Assessment Ideas

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Sample Assessment Ideas

  • Students list three animals that no longer exist on Earth and three animals that now exist.

  • Students watch a movie about prehistoric times. Pick out three things that are not true about our Earth today.

Expanded Sample Assessment Idea

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Expanded Sample Assessment Idea

  • Students use an assortment of pictures or toys, to separate animals that no longer live on Earth from those animals that are now living on Earth.


Students will:

  1. Study pictures or toys of animals (some that currently live on Earth and some that no longer live on Earth).

  2. In a group, sort the animals into those currently living on Earth and those no longer living on Earth.

  3. Individually sort a subset of 5 animal pictures or toys into groups of those currently living on Earth and those no longer living on Earth; make a poster using the animal pictures; discuss why they choose to put the animals in each category.

Reflection and Revision

Given 4–5 new animal pictures or toys, how do you decide where they should be placed in the poster?


Levels of Performance

Stage 4
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Student successfully sorts the animal pictures and the new set of animals.

Stage 3
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Student successfully sorts most of the animal pictures and the new set of animals.
Stage 2
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Student has limited success sorting the animal pictures or the new set of animals.
Stage 1
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Student has difficulty sorting animals pictures and new animals and most are incorrectly sorted.
Standards Cross-Reference red rule

Standards Cross-References
( Alaska Department of Education & Early Development Standards

National Science Education Standards

An organism’s patterns of behavior are related to the nature of that organism’s environment, including the kinds and numbers of other organisms present, the availability of food and resources, and the physical characteristics of the environment. When the environment changes, some plants and animals survive and reproduce, and others die or move to new locations. (Page 129)



Different plants and animals have external features that help them thrive in different kinds of places. (Page 123)

Some kinds of organisms that once lived on Earth have completely disappeared, although they were something like others that are alive today. (Page 123)

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