Cubelets - Day 2

1. Title: Sensor and Actor Cubelets

2. Objectives
 To learn light sensor Cubelet 
 To learn distance sensor Cubelet
 To learn speaker actor Cubelet
 To learn bar graph actor Cubelet

3. Key Concepts
 Power / Light Sensor / Distance Sensor / Speaker Actor / Bar Graph Actor

4. Georgia Standards

2nd Grade
S2CS2.
Students will have the computation and estimation skills necessary for analyzing data and following scientific explanations.
S2CS3.
Students will use tools and instruments for observing, measuring, and manipulating objects in scientific activities.
S2CS3.b
Assemble, describe, take apart, and reassemble constructions using interlocking blocks, erector sets and other things.
S2CS3.c
Make something that can actually be used to perform a task, using paper, cardboard, wood, plastic, metal, or existing objects.
S2CS5.
Students will communicate scientific ideas and activities clearly.
S2P2.
Students will identify sources of energy and how energy is used.
MCC2.NBT.2
Count within 1000; skip-count by 5s, 10s, and 100s.
MCC2.MD.1
Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.
MCC2.MD.3
Estimate lengths using units of inches, feet, centimeters, and meters.
MCC2.MD.10
Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four categories. Solve simple put-together, take-apart, and compare problems10 using information presented in a bar graph.













5. Procedures
1st Activity: What is Light Sensor Cubelet and Speaker Actor Cubelet?
1. Introduction:
- If we attach a light sensor and a sound actor to a power Cubelet, the sensor will absorb light and the actor will produce a sound.

2. Make a prediction. 
- Do you think the amount of light will make a difference in how frequent sound is?

3. Test it out and record the results. 
- Put light sensor Cubelet and speaker actor Cubelet to power Cubelet.
- Turn the switch on the power Cubelet. How does a light sensor respond to infrequent sound? Check!
- Block the light sensor to block all the lights. How does a light sensor respond to infrequent sound? Check!
- Open the box little bit to shine a light a little bit. How does a light sensor respond to frequent sound? Check!

4. Learn about the relationship between the amount of light and light sensor.
- What is the relationship between the amount of light and light sensor?

2nd Activity: What is Distance Sensor Cubelet and Bar Graph Actor Cubelet?
1. Make a prediction. 
Do you think if you put the woodblock at different distances (each 10cm apart) will the bar graph make differently? (Yes or No)

2. Test it out. 
- Put the distance sensor at the line of yellow.
- Put a wood block at each 10 cm and count the bars in the bar graph Cubelet.

3. Record the results.
- Color the number of bars at each point (10cm, 20cm, 30cm, …80cm)
- How does the distance sensor work? What is the relationship of distance between the object sensor and woodblock?

6. Review
- What is the name of this sensor?
What is the name of this actor?
- How does these sensor and actor work?