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Smell the Flowers text page adaptation, arthropods, plant parts, plants, evolution
Hold Your Nose text page senses, adaptation, respiratory system, digestive system, human body, anatomy
Cat Wiggles text page kinetic/potential, adaptation, vertebrates, behavior, model, muscular system, engineering, mammals, structure and function, skeletal system, anatomy, force and interactions, energy
Yellow Purple Finch? text page food web, adaptation, behavior, birds, digestive system, body covering
When Does a Theory Become a Law? text page, free, checked evolution, hypothesis, theory, and law
Creating a Sprout Guide text page, photography, free growth and development, observation, plant parts, reproduction, plants, classification
The Apple Tree, Day 1 text page, johnson invertebrates, arthropods, behavior, ecosystem, reproduction, mammals
Brain Freeze text page senses, critical thinking, observation, digestive system, nervous system, human body, investigations and experiments
Searching for Sandstone Bees text page, johnson invertebrates, arthropods
How Does a Butterfly Fly?swallowtail butterfly text page, free adaptation, arthropods, model, muscular system
Thoughts on an Exoskeleton text page, free growth and development, invertebrates, adaptation, arthropods, cycles, body covering, structure and function, skeletal system, animals
Contagious Yawns text page Variables and controls, observation, nervous system, investigations and experiments, hypothesis, theory, and law
Calories: Measuring the Energy text page, free digestive system, misconceptions, human body, measurement, anatomy, energy

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