Two analog sensor inputs

In this activity students use the current and voltage sensors and investigate power delivered to a resistor by investigating the behavior of bulbs in dc circuit. Activity Intriguing behaviour of bulbs
seedsIn this activity students investigate whether plants also respire. Most people know that animals respire but what about plants? By making use of germinating seeds, and a CO2 sensor, the respiration of plants seeds can be measured. Activity Respiration of plant seeds (demo)