Hay vs. Straw: A Hands-On Animal Science Lab for PreK–2

Why do animals sleep on straw but eat hay?

In this hands-on science lab, children explore the real differences between hay and straw and discover why farmers use each one differently during winter.

Through simple experiments, observation, and real farm video, children learn how animals stay warm, dry, and healthy using the same materials farmers rely on every day.

This lab is complete on its own and works beautifully as a single science lesson or as part of a larger unit.

🔍 What’s Included

• 🧪 Insulation experiment using straw and ice

• 🧪 Absorbency test comparing hay and straw

• 🎥 Real farm video connection

• 📓 Printable observation pages and sorting activities

• 🗣️ Vocabulary and discussion prompts

🎯 At a Glance

• Ages: 3–8 (PreK–2nd Grade)

• Focus: Animal care, insulation, materials science

• Format: Digital PDF + Video Access

• Use: Homeschool, enrichment, or classroom

🌾 Looking for More?

This lab is also included in the Winter on the Farm: Hands-On Science Unit, where it connects with additional winter science labs and activities.

Family License

This license is for use in one household. Printing is permitted for immediate family use only.

Classroom License

This license allows use with one classroom, co-op, or learning group (up to 10 students). Printing is permitted for group use.