Food chain builder

What this tool shows

A food chain shows what eats what, and so how energy passes from one living thing to the next. Every chain starts with a producer, a plant or alga that makes its own food using sunlight. Next comes a primary consumer that eats the producer, then secondary and tertiary consumers. In this tool, students pick a habitat, tap living things in order and press Check. Correct links turn green and wrong ones turn red, and when the whole chain works, each living thing is labeled with its level.

Why building chains helps

Copying a food chain from a book is easy. Building one means deciding who eats whom, which is where the learning happens. The direction of the arrows is a common stumbling block, and building chains makes students say each link out loud: "The snail is eaten by the sunfish." Getting a red arrow and fixing it is far more memorable than being told.

Common misconceptions

• The arrows do not mean "eats". They point from the food to the eater, showing which way the energy flows.
• Producers are not only green plants on land. In ponds and oceans, tiny algae and phytoplankton are the main producers.
• The top predator is not always the biggest animal. It's the one that nothing else in that habitat eats.
• Real animals usually eat more than one thing, so food chains link up into food webs. Removing one living thing can affect many others.

A 10-minute food chain activity

• Ask: "What did your dinner eat?" Trace one food back to the sun.
• Choose the pond and build a chain together, saying "is eaten by" for each arrow.
• Let the student build a four-link chain in another habitat on their own and check it.
• Ask what would happen to the rest of the chain if the producers disappeared.
• Challenge: find one animal that appears in two different chains.

Where this fits in school

• US, grade 5: NGSS 5-LS2-1 asks students to model how matter moves among plants, animals, decomposers and the environment, and 5-PS3-1 asks them to show that the energy in animals' food was once energy from the sun.
• US, grades 6 to 8: NGSS MS-LS2-3 asks for a model of how matter cycles and energy flows through an ecosystem.
• England, Year 4: pupils construct and interpret a variety of food chains, identifying producers, predators and prey.
• England, Key Stage 3: students study food webs and how organisms in an ecosystem depend on one another.

Learning more

Science is part of Eurekami's skill map, with lessons that draw science diagrams live and narrate them in English or Spanish. When a question is tricky, the AI tutor asks guiding questions so the student does the reasoning. Parents can follow what their child has practiced in the weekly report.