Trace how living things obtain what they need

Learning goal (for the adult): Explain how living things obtain energy, water and other needed materials from their surroundings, including living and nonliving parts of the environment. Living things also need temperatures within a suitable range. Different organisms have different requirements, so “give every living thing the same food and place” is not a workable care plan.

Begin with a familiar growing plant. A green plant uses energy from sunlight to make food for itself. It takes in water and other needed materials from its environment. Soil can provide water and minerals, but soil is not the plant's ready-made food. This distinction matters: pouring more soil around a plant does not replace the light it needs.

Animals obtain energy by eating plants, other animals, or both. A rabbit can obtain food energy by eating plant material. A fox can obtain food energy by eating another animal. The illustrated example connects sunlight, grass, a rabbit and a fox. Arrows point in the direction energy is transferred, from source to receiver. They do not mean that the rabbit becomes a fox or that each organism eats everything shown on the page.

This is one simplified feeding example, not a complete diet or a complete account of a real place. Rabbits eat more than one kind of plant, and foxes can eat several kinds of food. Living things use energy; it is not passed on in its entirety to the next organism. First graders need not calculate those transfers, but the picture should not suggest that the whole sun or the entire grass plant moves into the rabbit.

Water is a separate need from food energy. Animals drink or obtain water through food, and plants take up water. A living thing can have food available and still lack sufficient water. Likewise, a suitable temperature range matters even when water and food are present. A place that is too hot or too cold for a particular organism may not meet its needs.

The environment includes living components such as plants and other animals, and nonliving components such as water, air, sunlight and soil materials. A rabbit's food can come from a living plant while its drinking water is nonliving. A plant uses sunlight, which is nonliving; light is an energy source rather than a material that is eaten. Keep those categories clear as you trace different needs.

Use observation, reliable care information and supplied examples to identify needs. Do not deprive a classroom organism of water, light, food or an appropriate temperature to demonstrate what happens. We can compare evidence and design a suitable environment without harming the living thing.

Read aloud to the children: Living things need food, water and the right warmth. A green plant uses sunlight to make its own food. It takes in water too. A rabbit eats plants. A fox can eat other animals. Some animals eat both. Food is not enough by itself. Animals need water too. We take good care of class plants and pets. We never take away what they need.

Worked example 1: Read the first arrow. Sunlight points toward grass. Explain that the grass receives energy from sunlight. The arrow does not say the sun eats grass. Read every arrow in the same source-to-receiver direction before interpreting the next connection.

Worked example 2: Separate food and water. A rabbit has plant food but its water supply is unavailable. Having food alone does not show that all its needs are met. Identify water as a separate missing resource and use an adult's appropriate care guidance to address it.

Worked example 3: Correct the soil-food shortcut. A child says a seedling eats soil. Explain that a green plant uses light energy to make food, while water and minerals are obtained from its surroundings. Soil can help supply some materials and support roots, but it does not replace sunlight.

Guided investigation: Use pictures or observe a safely maintained plant. Build a chart with need, source and whether that source is living or nonliving. Then trace the illustrated energy path, reading each arrow aloud. Keep the water and suitable-temperature notes separate from the feeding arrows.

Independent tasks: Explain how a plant and an animal obtain energy differently, identify a living and a nonliving source of resources, and interpret one arrow correctly. Describe why food alone is insufficient evidence that an animal's needs are met. Draw a simple resource map with a key explaining what its arrows mean.

Feedback: If every arrow is read as “eats,” revisit sunlight to grass. If the learner thinks the example is every fox's complete diet, return to the simplified-example label. Credit explanations that name the particular organism, need and source, and acknowledge information still needed to plan responsible care.