The unit of DC electricity involves 16 activities altogether, some of them consists of several parts.
They offer a wide range of IBSE activities on different inquiry level, so that youÂ can choose the activity that is appropriate for your own curriculum.
Here is the possible arrangement of the activities with respect to the elearning cycle.
Activity Name  Inquiry Type  Eemphasis 
1. Electric current, battery and bulb 

How torch works 
guided discovery/guided inquiry 
Engage/explore 
Construct a simple electric device 
bounded inquiry 
Engage/explore 
2. What material conducts electric current? 
guided inquiry 
Explore/Explain 
3. How is it connected inside the black box? 
guided discovery/inquiry 
Explore/Explain 
4. Measuring current and voltage 
guided inquiry 
Exploration 
5. Electric element in a dc circuit 

Resistor 
guided discovery 

Bulb 
Explore/Explain 

Other elements in a dc circuit (diode) 

What element is hidden in the black box? 
bounded inquiry 
Extend/elaborate 
6. Resistance and temperature (build your own thermometer) 

Metal conductor 
guided inquiry 
Explore/Explain 
Thermistor 
guided inquiry 
Explore/Explain 
7. Model of electric conductivity (why is it more or less resistive) 
Interactive discussion/demonstration 
Explain 
8. Does human body obey Ohm's Law? 
bounded inquiry 
Extend (elaborate) 
9. Intriguing behaviour of bulbs 

Two identical bulbs in series 
guided inquiry 
Extend (elaborate) 
Two different bulbs in series 
guided/bounded inquiry 
Extend (elaborate) 
Switch on the circuit 
bounded inquiry 
Extend (elaborate) 
Two identically labelled bulbs 
bounded inquiry 
Extend (elaborate) 
10. Build your own battery 

Coins in solution 
guided inquiry 
Engage/explore 
Fruit cell 
guided inquiry 
Engage/explore 
Lead storage battery 
interactive demonstration 
Engage/explore 
11. Battery and its basic parameters 

Terminal voltage 
guided discovery 
Explore/explain 
Power transfer to the load 
guided inquiry 
Explore/explain 
Power transfer efficiency 
guided inquiry 
Explore/explain 
Build up a model of battery behaviour 
bounded inquiry 
Explore/explain 
12. Batteries in series and in parallel 
bounded inquiry 
Extend (elaborate) 
13. How electric eel kills its prey 
bounded inquiry 
Extend (elaborate) 
14. How much energy is stored in a battery? 
guided inquiry 
Explore/explain 
15. Batteries and their reasonable use 
open inquiry 
Elaborate/evaluate 
16. Other alternative electrical sources 

Fuel cell 
Bounded inquiry 
Extend (elaborate) 
Photovoltaic cell 
Bounded inquiry 
Extend (elaborate) 