| Page 15 | The Happy Scientist

	page type	Click a topic link to see more.
Smell the Flowers	text page	adaptation, arthropods, plant parts, plants, evolution
The Apple Tree, Day 1	text page, johnson	invertebrates, arthropods, behavior, ecosystem, reproduction, mammals
Feeling Sound Waves	text page	senses, cycles, model, sound, waves, force and interactions
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
Feeling the Pressure	text page	senses, critical thinking, pressure, gravity, measurement, water, force and interactions
When Does a Theory Become a Law?	text page, free, checked	evolution, hypothesis, theory, and law
Hold Your Nose	text page	senses, adaptation, respiratory system, digestive system, human body, anatomy
Creating a Sprout Guide	text page, photography, free	growth and development, observation, plant parts, reproduction, plants, classification
How Does a Butterfly Fly?	text page, free	adaptation, arthropods, model, muscular system
Brain Freeze	text page	senses, critical thinking, observation, digestive system, nervous system, human body, investigations and experiments
Contagious Yawns	text page	Variables and controls, observation, nervous system, investigations and experiments, hypothesis, theory, and law
Searching for Sandstone Bees	text page, johnson	invertebrates, arthropods

The Happy Scientist