Animals rarely exist in single, one-dimensional food chains. In order to demonstrate a more realistic representation of how energy passes from living thing to another, students will create a food web from different food chains in a single habitat. In a similar way to food chains, the arrows represent the flow of energy from one animal to another. The different colors are there to emphasize the different trophic levels, but are not necessary.
As an alternative to this assignment, give students the example food web and get students to identify different food chains from it. As an extension, get students to start to thinking how the population of one type of living thing affects another. For example if the number of Mussels increase, how will this affect the population of whelk?
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In the real world animals rarely exist in single food chains. Often animals need to eat different plants and animals to get all the nutrients they need. One way of showing more complex energy transfer relationships between living thing is using food webs. Create a food web from different food chains. Remember that all food webs start with energy from the Sun.
Grade Level 6-8
Difficulty Level 4 (Difficult / Complex)
Type of Assignment Individual or GroupCommon Core Standards
(You can also create your own on Quick Rubric.)
| Proficient |
| Emerging |
| Beginning |
Animals images and labels
There is a clear photo for every animal and every photo is labeled with the name of the aminal.
There is a clear photo for most animals and most photos are labeled with the name of the aminal.
There isn't a clear photo for most animals and most photos aren't labeled with the name of the aminal.
Energy Flow arrows
All the necessary arrows are drawn correctly.
Most of the necessary arrows are drawn correctly.
Not many of the necessary arrows are drawn correctly.
Evidence of Effort
Work is well written and carefully thought out.
Work shows some evidence of effort.
Work shows little evidence of any effort.