Cold Spring Harbor Laboratory
Sex Cells Have One Set of Chromosomes; Body Cells Have Two
What's the difference between body cells and sex cells? Learners explore the question and the process of meiosis using an interactive lesson. An animation describes the discovery of meiosis and describes its phases for a detailed and...
Biology Junction
Cnidarians and Ctenophorans
Cnidaria is a broad phylum of 11,000 different species from jellyfish to coral. Most Cnidarians are marine species with a few freshwater examples. A lesson presentation explains the important characteristics of different species of...
LABScI
Circulation and Respiration: Vital Signs
What do your vital signs tell your doctor? An engaging hands-on lesson has your learners monitor their own lung capacity, blood pressure, and heart rate. They then connect the vital measures to the workings of the circulatory and...
Curated OER
Animal Colors and Shapes
Students investigate the natural characteristics of animals by completing a coloring activity. In this animal properties activity, students investigate the reasons different animals have specific colors, and how it is essential for...
Roland Park Country School
Butterfly or Moth?
What is the main difference between a moth and a butterfly? Butterflies have club-shaped antennae, while moths have a feather-like antennae. But what else differentiates these beautiful insects? The presentation in the resource...
American Museum of Natural History
What's This? Reproduction
Attracting the right mate is as important for humans as any other species. An interesting lesson teaches individuals about several strategies that animals and plants have adapted to attract their mates. From colorful nests to powerful...
Curated OER
Building a Baby
Students study the fetal development of humans. In this development lesson students divide into groups and research the different gestational weeks of a fetus.
Curated OER
Science Surprises: Penguins
In this reading comprehension worksheet, students read a 3 paragraph selection about penguins and then respond to 3 short answer questions.
University of Arizona
The Biology Project: Human Biology
This site provides basic information on human genetics and reproduction using tutorials, simulations, images and quizzes. There are also links to other worthwhile sites.