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1 VLab: Density 5,281 Try Now
2 Carbohydrates: Structures & Functions 4,339 Try Now
3 VLab: Atomic Structure 4,132 Try Now
4 VLab: Stream Ecology 3,455 Try Now
5 Plant Growth & Development 2,943 Try Now
6 The Rock Cycle 2,847 Try Now
7 VLab: Enzymes 2,792 Try Now
8 VLab: Membranes 2,525 Try Now
9 The Water Cycle 2,385 Try Now
10 VLab: Carbon Cycle 2,137 Try Now
11 VLab: Photosynthesis 2,089 Try Now
12 Sexual & Asexual Reproduction 2,055 Try Now
13 Properties of Elements 1,959 Try Now
14 VLab: Linear Motion 1,943 Try Now
15 VLab: Cell Division 1,555 Try Now
16 VLab: Evidence for Plate Tectonics 1,444 Try Now
17 Natural Resources: Petroleum 1,408 Try Now
18 VLab: Seasons 1,402 Try Now
19 VLab: Electron Transitions 1,019 Try Now
20 VLab: Mendelian Genetics 987 Try Now
21 VLab: Eclipses 960 Try Now
22 Predator-prey Relationships 947 Try Now
23 Introduction to Mitosis & Meiosis 920 Try Now
24 VLab: Free Fall 910 Try Now
25 Chemical Nomenclature 895 Try Now
26 Human Population Growth 860 Try Now
27 Plant Reproduction 848 Try Now
28 Solutions, Suspensions & Colloids 787 Try Now
29 Organelle Functions 778 Try Now
30 Earth's Interior 769 Try Now
31 VLab: Precipitation Reactions 737 Try Now
32 Cell Sizes 699 Try Now
33 Sex-linked Traits 697 Try Now
34 Causes & Effects of Ocean Currents 650 Try Now
35 Definitions of Acids & Bases 649 Try Now
36 VLab: Solution Properties 645 Try Now
37 Lewis Electron Dot Structures 641 Try Now
38 Symbiotic Relationships 641 Try Now
39 Volcano Formation 632 Try Now
40 Ionic & Covalent Bonds 611 Try Now
41 VLab: Geologic Time 610 Try Now
42 Protein Structure 590 Try Now
43 Melting Points & Boiling Points 578 Try Now
44 VLab: Wave Properties 576 Try Now
45 VLab: DNA Replication 574 Try Now
46 VLab: Microevolution 567 Try Now
47 VLab: Kinetic & Potential Energy 562 Try Now
48 VLab: Tides 557 Try Now
49 VLab: Planetary Motion 555 Try Now
50 Net Forces & Newton's Second Law 540 Try Now
51 VLab: Chemical Equations 536 Try Now
52 Energy Flow in Ecosystems 530 Try Now
53 Evidence for Evolution 517 Try Now
54 Analyzing Your Nutrient Intake 509 Try Now
55 Force Diagrams 505 Try Now
56 Constant Acceleration 504 Try Now
57 Kinematic Equations 492 Try Now
58 Phase Diagrams 474 Try Now
59 VLab: Gas Laws 471 Try Now
60 Nuclear Reactions 470 Try Now
61 The Human Body: Systems 450 Try Now
62 VLab: Disease Dynamics 450 Try Now
63 Energy Conversions: KE & PE 446 Try Now
64 VLab: Acid-Base Chemistry (Titrations) 442 Try Now
65 Elements: Chemical & Physical Properties 435 Try Now
66 Periodic Properties 416 Try Now
67 Fetal Development 414 Try Now
68 VLab: Modern Taxonomy 407 Try Now
69 VLab: Properties of Stars 378 Try Now
70 Structure & Properties of Water 364 Try Now
71 Charles Darwin and Evolution by Natural Selection 359 Try Now
72 Genetic Research & Molecular Medicine 354 Try Now
73 VLab: Circuits 353 Try Now
74 Punnett Squares 336 Try Now
75 Exploring an Ecological Address 327 Try Now
76 Stellar Evolution 324 Try Now
77 Life: Scientific Discoveries 313 Try Now
78 The Immune System 291 Try Now
79 Circular Motion 282 Try Now
80 Glycolysis 277 Try Now
81 Rock Classifications 272 Try Now
82 VLab: Limiting Reactants 270 Try Now
83 Exploring Taxonomic Groups 267 Try Now
84 Earthquakes & Volcanoes: Patterns of Fury 266 Try Now
85 The Evolution of Atomic Theory 266 Try Now
86 Lab: Cell Differentiation 264 Try Now
87 Viruses 261 Try Now
88 VLab: Measures of Concentration 259 Try Now
89 VLab: Calorimetry 259 Try Now
90 Empirical & Molecular Formulas 250 Try Now
91 Lab: Microscopy 248 Try Now
92 Neurons & Action Potentials 247 Try Now
93 The Doppler Effect 234 Try Now
94 Water Budgets: Calculations & Graphs 233 Try Now
95 Compounds: Formulas & Nomenclature 232 Try Now
96 Human Evolution 231 Try Now
97 Plant Evolution 226 Try Now
98 Forecasting Earth's Future 226 Try Now
99 Simple Machines 222 Try Now
100 The Chemical Basis of Industry 219 Try Now
101 Characteristics of Ocean Waves 216 Try Now
102 Origin of Earth's Moon 212 Try Now
103 Vector Algebra 212 Try Now
104 Formula & Molecular Masses 211 Try Now
105 Understanding pH 206 Try Now
106 Understanding Momentum 204 Try Now
107 Acids & Bases: Physical & Chemical Properties 202 Try Now
108 Mass-volume Stoichiometry 202 Try Now
109 Light Waves: Reflection & Refraction 197 Try Now
110 Plate Tectonics and the Fossil Record 195 Try Now
111 Calculating Work 191 Try Now
112 Molecular Structures 190 Try Now
113 Weight & Gravitational Acceleration 190 Try Now
114 Using the Periodic Table to Determine Oxidation States 190 Try Now
115 Mineral Fact Sheets 188 Try Now
116 Lunar Myths 185 Try Now
117 Food Chains and Biological Magnification 184 Try Now
118 Recombinant DNA Technology 181 Try Now
119 Genetically-modified Foods 181 Try Now
120 Fluid Pressure 179 Try Now
121 How Population Growth and Energy Consumption Affect An Ecosystem 178 Try Now
122 Characteristics of Our Solar System 177 Try Now
123 Static Electricity 172 Try Now
124 The Human Body: Biorhythms 172 Try Now
125 Thermodynamics: Energy & Entropy 171 Try Now
126 Colligative Properties: Freezing & Boiling Points 165 Try Now
127 Using Forensic Evidence to Solve a Murder 161 Try Now
128 Balancing Chemical Equations 161 Try Now
129 Lab: Indicators 158 Try Now
130 Detecting Extrasolar Planets 157 Try Now
131 Graham's Law 157 Try Now
132 Normal & Active Galaxies 156 Try Now
133 Properties of Solids 156 Try Now
134 Calculating Food Calories 156 Try Now
135 Earth's Geological & Biological History 149 Try Now
136 Lab: Action Spectrum for Photosynthesis 149 Try Now
137 Lab: Popcorn & the Gas Laws 144 Try Now
138 Lab: Motion & Friction 143 Try Now
139 Magnetism & Its Uses 141 Try Now
140 Reaction Coordinate Diagrams 141 Try Now
141 Redox: The Chemistry of Batteries 139 Try Now
142 A Model for Chemiosmosis 136 Try Now
143 Archimedes' Principle 135 Try Now
144 Understanding Potential & Potential Energy 135 Try Now
145 DNA Fingerprinting: A Simulation 135 Try Now
146 Lab: Paper Chromatography 134 Try Now
147 Lab: Conserving Mass 133 Try Now
148 Lab: Newton's Second Law 133 Try Now
149 Lab: Falling Objects 132 Try Now
150 Analyzing Carbon-Based & Alternative Fuels 131 Try Now
151 Lab: Chemical Reactions: Classes and Characteristics 131 Try Now
152 Protein Synthesis 131 Try Now
153 Decomposition Reactions 130 Try Now
154 Buffered Solutions 129 Try Now
155 Air Density 126 Try Now
156 Lab: Heating Curve for Water 126 Try Now
157 Constellations 123 Try Now
158 Lab: Isolating DNA From Foods 123 Try Now
159 Kepler's First Law 122 Try Now
160 Lab: Soil pH & Solubility 121 Try Now
161 The History and Significance of Genetic Discoveries 121 Try Now
162 Lab: Using Colligative Properties to Identify Pure Substances & Mixtures 121 Try Now
163 Nuclear Power: The Pros & Cons 120 Try Now
164 Projectile Motion 119 Try Now
165 The Electromagnetic Spectrum 117 Try Now
166 Lab: Simulating Disease Transmission 115 Try Now
167 Lab: Kitchen Stoichiometry 115 Try Now
168 The Special Theory of Relativity 114 Try Now
169 Natural Selection 113 Try Now
170 The Human Body: Diseases 110 Try Now
171 Crop Recommendations 109 Try Now
172 Lab: Periodic Motion 106 Try Now
173 Lab: First-Class Levers 106 Try Now
174 Impact of Ocean & Landmass Distributions 104 Try Now
175 Writing & Classifying Chemical Equations 103 Try Now
176 Lab: Line Spectra 102 Try Now
177 Conservation of Momentum 101 Try Now
178 Lab: Determining Salinity 101 Try Now
179 Lab: Natural Magnets & Electromagnetism 100 Try Now
180 Radioactivity 96 Try Now
181 Lab: Launching Rockets 96 Try Now
182 Electric Power & Energy Efficiency 95 Try Now
183 Lab: Investigating Heat Exchange 95 Try Now
184 Cloning: Techniques and Issues 95 Try Now
185 Lab: Energy "Losses" 92 Try Now
186 Telescope Analysis 92 Try Now
187 Lab: Building Circuits 92 Try Now
188 Motion of Satellites 92 Try Now
189 Lab: Elastic Collisions 91 Try Now
190 Hardy-Weinberg Equilibrium: Mechanisms for Evolutionary Change 90 Try Now
191 Lab: Conduction 90 Try Now
192 Precession and Its Effect on the Night Sky 88 Try Now
193 Lab: Detecting Motion 88 Try Now
194 Gibbs Free Energy 88 Try Now
195 Laws of Refraction and Reflection 88 Try Now
196 How Earth's Revolution Defines Our Year 88 Try Now
197 The Polymerase Chain Reaction 87 Try Now
198 Solubility Curves 87 Try Now
199 Zebrafish Embryology 86 Try Now
200 Reaction Rates 84 Try Now
201 Lorentz Force and Induction 84 Try Now
202 Lab: Groundwater Chemistry and Its Effect on Limestone Solubility 84 Try Now
203 Lab: Vertical Motion 81 Try Now
204 Hooke's Law 81 Try Now
205 Lab: Product Quantities & Percent Yield 79 Try Now
206 Galactic Redshifts 79 Try Now
207 Lab: Using Specific Gravity to Identify Unknowns 77 Try Now
208 Measuring Earth's Radius & Circumference 77 Try Now
209 Lab: Sound Frequencies of Vibrating Objects 71 Try Now
210 Lab: Angular Speed 67 Try Now
211 Lab: Rotational (Moment of) Inertia 61 Try Now

*Views represent combined teacher and student resource usage for the current academic year.

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