| 1 | Temperature Probe Response Time | Go Direct® Temperature Probe |
| 2 | Boiling Temperature of Water | Go Direct® Temperature Probe |
| 3 | Freezing and Melting of Water | Go Direct® Temperature Probe |
| 4 | Evaporation of Alcohols | Go Direct® Temperature Probe (2) |
| 5 | Endothermic and Exothermic Reactions | Go Direct® Temperature Probe |
| 6 | Neutralization Reactions | Go Direct® Conductivity Probe, Go Direct® Temperature Probe |
| 7 | Mixing Warm and Cold Water | Go Direct® Temperature Probe (2) |
| 8 | Heat of Fusion | Go Direct® Temperature Probe |
| 9 | Energy Content of Fuels | Go Direct® Temperature Probe |
| 10 | Energy Content of Foods | Go Direct® Temperature Probe |
| 11 | Absorption of Radiant Energy | Go Direct® Temperature Probe (2) |
| 12 | An Insulated Cola Bottle | Go Direct® Temperature Probe (2) |
| 13 | A Good Sock | Go Direct® Temperature Probe (2) |
| 14 | Insolation Angle | Go Direct® Temperature Probe (2) |
| 15 | Solar Homes and Heat Sinks | Go Direct® Temperature Probe (2) |
| 16 | Conducting Solutions | Go Direct® Conductivity Probe |
| 17 | Conductivity of Saltwater: The Effect of Concentration | Go Direct® Conductivity Probe |
| 18 | Acid Strengths | Go Direct® Conductivity Probe |
| 19 | Frictional Forces | Go Direct® Force and Acceleration Sensor |
| 20 | First-Class Levers | Go Direct® Force and Acceleration Sensor, Meter Stick |
| 21 | Pulleys | Go Direct® Force and Acceleration Sensor |
| 22 | An Inclined Plane | Go Direct® Force and Acceleration Sensor |
| 23 | Reflectivity of Light | Go Direct® Light and Color Sensor |
| 24 | Polarizing Light | Go Direct® Light and Color Sensor |
| 25 | How Bright is the Light? | Go Direct® Light and Color Sensor, Meter Stick |
| 26 | Electromagnets: Winding Things Up | Go Direct® 3-Axis Magnetic Field Sensor |
| 27 | Magnetic Field Explorations | Go Direct® 3-Axis Magnetic Field Sensor, Meter Stick |
| 28 | Household Acids and Bases | Go Direct® pH Sensor |
| 29 | Acid Rain | Go Direct® pH Sensor |
| 30 | Gas Pressure and Volume | Go Direct® Gas Pressure Sensor |
| 31 | Gas Temperature and Pressure | Go Direct® Gas Pressure Sensor, Go Direct® Temperature Probe |
| 32 | Fun with Pressure | Go Direct® Gas Pressure Sensor |
| 33 | Lemon "Juice" | Go Direct® Voltage Probe |
| 34 | Simple Circuits | Go Direct® Voltage Probe, Vernier Circuit Board 2 |
| 35 | Graphing Your Motion | Go Direct® Motion Detector, Meter Stick |
| 36 | Speeding Up | Go Direct® Sensor Cart |
| 37 | It's Race Day | Go Direct® Motion Detector, Meter Stick |
| 38 | Crash Lesson | Go Direct® Sensor Cart |
| 39 | Newton's Second Law | Go Direct® Sensor Cart, Hanging Mass Set 250 g |
| 40 | Falling Objects | Go Direct® Motion Detector |
