Together, water and photosynthesis are the source of all life on Earth! Little curious minds will enjoy discovering the ins and outs of photosynthesis.

Use this life science worksheet to help middle school students boost their understanding of photosynthesis and how matter and energy cycle on Earth.

Explore how traits are influenced by both genetic and environmental factors with this life science worksheet!

Learn about the features of plant and animal cells in this compare-and-contrast worksheet!

Sit down for a fun science lesson with Steve the savvy scientist as he teaches you all about dominant and recessive genes!

Discover how animal behaviors increase the probability of successful reproduction and offspring survival with this middle school science worksheet!

Learn about biodiversity and its impact on an ecosystem’s stability with this informative middle-grade worksheet.

Students compare structures in the bodies of different organisms in order to draw conclusions about evolutionary relationships in this life science worksheet!

Students use a food web to identify the roles of organisms in an ecosystem and draw conclusions about the cycling of matter and flow of energy.

Learn how to analyze DNA with this informative exercise designed for middle-grade students!

Explore how the fossil record is used to study the evolution of organisms in this engaging science worksheet for middle grades!

Leap into learning about vernal pools and their importance for amphibian survival!

Students research an ecosystem of their choice and create an ecosystem model in this life science worksheet for middle grades!

Learn how sensory information is processed by the somatic and autonomic nervous systems with this engaging science worksheet! 

Explore the anatomy, physiology, and overall function of the sensory nervous system with this life science worksheet! 

Students learn about population dynamics through the context of fox and rabbit populations in a forest ecosystem.

Students hone their understanding of the similarities and differences between animal cells and plant cells in this middle grades life science worksheet!

Explore the difference between asexual and sexual reproduction in organisms with this middle school science worksheet!

Explore the difference between natural and artificial selection with this engaging life science worksheet for middle grades!

Reunite a family and their long-lost dog with the help of DNA testing in this middle-grade worksheet!

Use this engaging worksheet to introduce students to the geologic time scale and the pieces of evidence scientists use to determine Earth’s history!

How cool are chromosomes? Read what Steve the savvy scientist has to say about chromosomes and genes before testing your knowledge with some fill-in-the-blanks.

What do a raven, a bat, and a wolf have in common? Similar skeletal structures! In this Halloween worksheet, middle-grade students will explore homologous structures in different animals. 

Students read about genetic mutations in order to understand how mutations affect organisms in this engaging life science worksheet!

An animal cell is made up of many different organelles—color them all in this middle-grade worksheet! 

Learn about the stages of mitosis with this helpful biology handout!

Show what you know about the cell cycle with this mitosis matching worksheet!