Students learned about electromagnets. They viewed how an object made of iron, nickel, steel or cobalt can become a magnet if you apply electrical energy through a wire that is coiled around it. Connor mentioned, "I've seen something like that on TV. There was a junkyard and a machine was picking cars up and dropping them into another place." To ensure students got the concept of an electromagnet, it as placed near a compass thus moving the needle indicating a magnet was present. The class also got to see the difference between a parallel circuit and a series circuit. The parallel circuit (above) is complex because every bulb has it's own pathway. The series circuit (below) has only one path. Because of this, the bulbs in a series circuit were dimly AND if you remove a bulb, all of the other bulbs would not work. They were sharing the circuit in a series circuit. Jill stated, "My holiday lights do the same thing." In the parallel circuit, students noticed that all bulbs produced the same amount of light AND when one was removed, they continued to be lit. "This is like the light in my house", noticed Daniel. Parallel circuits have multiple pathways.
Students became masters at switches today. They had to build their own switch using only a pair of brads, a paper clip, wire, a battery (cell) and a light bulb (indicator). To further their knowledge of switches, they found many switches in the classroom like the GFCI outlet, technology router and our new motion detector switches in our bathrooms. We also took a field trip on our campus to find and discuss electricity. The best part was seeing the telephone poles across the street and viewing the inside of the new air conditioner circuit breaker box.
Students mastered the concept of conductors and insulators for electrical energy. They understood first hand that a conductor allows for the flow of electrical energy and and insulator stops the flow of electricity. They tested many items. Some items that were conductors were a paper clip, the chair leg, the door handle and the air conditioner duct. Some items that were insulators were a shoe lace, the wooden part of a pencil, tape and their school box.
Students mastered the concept of a circuit. They viewed a series of circuits and had to predict if the electrical energy would flow through them. After predicting, they used the three items needed for a circuit ( wire, source (cell or battery) and indicator (light bulb or LED) and had to make the circuit to determine if the electrical energy would be seen in the indicator. They also got to stretch their minds by making their own working circuits that were completely different from the ones they were working with during the lesson.
Students learned about circuits today. In pairs, they received a wire, light bulb (indicator) and a batteries or cell (source). Students mastered the concept of how a circuit is like a circle for the flow of electricity. If there is not a flow, the indicator will not work. Aryan thought, "It was fun because you get light the bulb like magic." "I think it was really fun because we got to experiment with energy and lighting the bulb was proof that there was electricity," laughed Andrew.
I hope you enjoy learning how the garden changes throughout the school year.