Classe en anglès

1. Lesson planning within SIOP Joan Pons Crespo
1
Type of electrical circuits
Background
The class has been studying the components of an electrical circuit: generators,
receptors and wires. In this lesson they will learn the different types of circuits: series
circuits, parallel circuits and combined circuits.
English proficiency level: Medium
Preparation
Content objectives: Students will learn about (write on the board): (5 minutes)
1) Different ways that the receptors can be connected:
Series Parallel Combined
2) How are the bulbs connected?
3) How do the electrical quantities depend on the connection?
4) How much light do the bulbs do?
5) What happens if a bulb breaks or is disconnected?
Language objectives: Students will:
1) Read information for each decision in a small group and reach consensus on a
position (by listening and discussing).
2) State their position and orally defend it in class dialogue.
3) Disagree with prior speakers in a respectful manner.
Materials
 Technology notes and notebook.
 For the practice: a power source, three bulbs, wires and a polymeter.

2. Lesson planning within SIOP Joan Pons Crespo
2
Motivation
Students are divided in groups of five. Each student of the group has a role: one
student is a power source, three are the bulbs and one student writes on the notebook.
The “power source” and the “bulbs” must try to connect in all possible ways, while the
one who is writing, draws the different circuits. (5 minutes)
Presentation
With the whole class, the members of each group draw one type of connection (“the
writer”) and represent it. They explain how they are connected and the rest of the class
agree or disagree, justifying why. (10 minutes)
The teacher explains the types of connection and their names (if students don’t know)
and gives the material to each group to do the practice: a power source, three bulbs,
wires, a polymeter and the sheet with the activity.
Practice
Each group builds each type of circuit, takes notes and completes the tables. Students
look the quantity of light that the bulbs do, take measure with the polymeter and
disconnect a bulb to observe what happens. (25 minutes)
Review
With the whole class, the teacher puts all the information in common on the results they
have obtained filling the tables.
The teacher does a Final review, which allows students to assess their own
understandings and clarify misunderstandings. (15 minutes)
Homework
 Writing: students must write sentences of the operating characteristics of bulbs
connected in series or parallel. They are helped with a substitution table placed
at the end of the activity, and they must use the T-Chart that is below the table
in order to classify the characteristics of series and parallel circuits.
 Auto-assessment: students must answer the questions of similar circuits in
order to consolidate the knowledge learned. The questions will be corrected the
next day at the beginning of the class, when they will do a feed-back in the
warm-up.

3. Lesson planning within SIOP Joan Pons Crespo
3
Substitution table of Series and Parallel Circuits
Use the following substitution tables to write sentences about the operating
characteristics of bulbs connected in series or parallel. This task helps you to classify
the characteristics of series and parallel circuits and to consolidate the knowledge
learned. To classify the circuits, you must use the T-Chart which is on the back page.
In series circuits… / In parallel circuits…
Connection of bulbs
the bulbs are connected
the end of one and all the beginnings together
all ends together with the beginning of the next
Electrical quantities
each bulb has the same
voltage flowing
current as the battery
Quantity of light
the bulb
provides a lot of light
gives low light
Breaks / disconnected bulbs
the total
current
is the sum of the
voltages
of each bulb
voltage currents
if a bulb
breaks
the other bulbs on the circuit
stop
working
is disconnected continue

4. Lesson planning within SIOP Joan Pons Crespo
4
T-Chart of Series and Parallel Circuits
Series Circuits Parallel Circuits
The bulbs are connected the end of one
with the beginning of the next
The bulbs are connected all ends
together and all the beginnings together
Each bulb has the same current flowing Each bulb has the same voltage as the
battery
The total voltage is the sum of the
voltages of each bulb
The total current is the sum of the
currents of each bulb
The bulb provides/gives low light The bulb provides/gives a lot of light
If a bulb breaks or is disconnected, the
other bulbs on the circuit stop working
If a bulb breaks or is disconnected, the
other bulbs on the circuit continue
working