The Energy is Flowing in 3rd/4th Science!

 In our 3rd/4th grade science class, we have been exploring energy over the last several weeks. The students have investigated electric current in circuits, and the pathways through which electricity flows. The students used a collection of materials including D-cells, lightbulbs, motors, switches, and wires in their investigations. 

In part one of our unit, the students used trial and error to create a system to light a bulb. They learned that electricity flows through the pathway, which is called a circuit. The energy is transferred through the circuit from component to component, which in turn lights the bulb.  

The students also discovered what materials transfer energy. The students used their circuit bases and components to build a system. They tested each object, and determined what materials were conductors vs. insulators. 

We then moved into investigating series and parallel circuits. The students were challenged with lighting two bulbs brightly with one D-cell, two bulbs, a switch, and four wires. Many students found that they were able to light the bulbs, but not brightly. We discussed the possible causes of why the lights were not bright. Many students shared that it was because the lightbulbs had to share electricity and the two bulbs slow down the electricity.  The students then solved their problem by adding another D-cell.  Lastly, I presented the question to the students: How can we get the two bulbs to light brightly with just one D-cell? I guided the students to try different methods in setting up their circuits to allow for the two bulbs to shine brightly. When students finally discovered the solution of a parallel circuit they were thrilled! I had some students literally jumping up and down with excitement! It made my day!