Take your kids outside and use the sunflower to show them the different parts of plants and how they thrive in different places. Set up an experiment where some of your sunflowers are watered less or get less light. Use the seed heads to demonstrate how birds eat plants.
Here is a link to a drawing you can use.
Life Sciences
Plants and animals meet their needs in different ways. As a basis for understanding this concept:
Students know different plants and animals inhabit different kinds of environments and have external features that help them thrive in different kinds of places.
Students know both plants and animals need water, animals need food, and plants need light.
Students know animals eat plants or other animals for food and may also use plants or even other animals for shelter and nesting.
Students know how to infer what animals eat from the shapes of their teeth (e.g., sharp teeth: eats meat; flat teeth: eats plants).
Students know roots are associated with the intake of water and soil nutrients and green leaves are associated with making food from sunlight.