What If One Animal Disappears?

Start with something students can look at or think about: a photo, a short video, a jar on the windowsill, or a question like "what do you already know about food webs?" Then let them work through it independently, using a partner or small group only if they want to talk through their thinking, keeping a word bank or anchor chart in view so the vocabulary stays available. When you review, ask students how they knew, and let them point to the part of the diagram or reading that told them. These food webs worksheets work well as a lead in before an investigation, as a way to capture what students noticed afterward, or as review before an assessment.

Predict what happens in a small food web when one animal disappears in 5 questions. A food web shows what eats what in one place. When one living thing disappears, the living things connected to it change too. The directions on the page read: Study the desert food web. The arrows point from the food to the animal that eats it. Then, answer the questions. The answer key shows every answer.

Yes, both. We made it for 3rd Grade ecosystems, and the page works the same whether it lands on a kitchen table or a center rotation. At home, most families go through it together and talk the answers out loud, and that talking is where most of the learning happens with food webs. In class it runs well as independent work while you pull a small group. Print one copy or thirty, whichever the day needs.

Food webs teach students that energy in an ecosystem doesn't move in a straight line, it flows in many directions through overlapping food chains. Third graders learn to identify producers, primary consumers, secondary consumers, and decomposers within a web, and explain how removing one organism affects others. It builds systems thinking alongside science vocabulary.

Food webs are typically introduced in Grade 3 ecosystems units, often after students have mastered simple food chains. At ages 8-9, students are ready to handle more complex, multi-directional diagrams and begin reasoning about cause and effect at an ecosystem scale. The topic pairs naturally with lessons on carnivores, herbivores, and omnivores.

Start with a simple food web diagram and ask your child to trace what would happen if one animal disappeared. The worksheets include labeled diagrams that make the content accessible without prior knowledge of specific species. Connecting the worksheet to a documentary or nature book your child likes makes the learning more memorable.

5 printable worksheets, all free to preview. Downloads are included with a ClassWeekly free trial, and every page prints on standard 8.5 x 11 paper.

These are written for 3rd Grade students, roughly ages 8-9. Many teachers also use them a grade up for review or a grade down as an extension, so use the preview to judge the fit for a particular child.

Yes. Each one shows the NGSS code it covers on its own page, so you can check the alignment yourself rather than taking our word for it.