Download Three Free 3D Investigations

 The 2026 3D Investigation Sampler includes phenomena-based investigations in biology, chemistry, and physics—written by current classroom teachers in the Vernier Trendsetters Community. Each of these experiments utilizes Go Direct^® wireless sensors and the Vernier Graphical Analysis^® app. 

In these investigations, students explore

Biology: Can a seed really undergo cellular respiration before it even sprouts? Investigate gas exchange in germinating seeds and compare cellular respiration across plants and animals using CO₂ and O₂ sensors.

Chemistry: Many clear solutions look identical—so how can we tell them apart? Prepare salt solutions of unique molarity, test your results, and explore what conductivity reveals about particles in solution.

Featured Products

Go Direct CO₂ Gas Sensor

The Go Direct CO₂ Gas Sensor measures gaseous carbon dioxide concentration levels, air temperature, and relative humidity. This versatile sensor can be used in a wide range of biology experiments, from exploring photosynthesis and respiration to investigating yeast fermentation. 

GDX-CO2

Go Direct O₂ Gas Sensor

Monitor oxygen gas levels alongside CO₂ to deepen student understanding of respiration and photosynthesis in biological systems. Ideal for a range of biology and physiology experiments, remote testing catalase activity to oxygen consumption during exercise, this sensor supports robust, real-time data collection.

GDX-O2

Go Direct Conductivity Probe

The Go Direct Conductivity Probe determines the ionic content of an aqueous solution by measuring its electrical conductivity. It connects via Bluetooth^® wireless technology or via USB to your device.

GDX-CON

Go Direct Motion Detector

The Go Direct Motion Detector uses ultrasound to measure the position, velocity, and acceleration of moving objects. It connects via Bluetooth^® wireless technology or via USB to your device.

GDX-MD