Grade 1 - Session 1: “Meet MeasureLab – Counting with Pulse!”
Architect: Aleeza Ayaz - Markhor3D
Session Length: 50-60 minutes
Session Overview:
In this introductory session, students get to know MeasureLab through a fun guessing game using a special sensor called a “Photogate.” Students will take turns passing their fingers through the Photogate, which detects the presence of an opaque object and shows a pulse on the screen each time something crosses its path. Students will have fun counting the pulses to guess how many fingers passed through the gate. This interactive activity sparks curiosity about MeasureLab’s ability to “see” movements and helps students intuitively understand sensor responses while developing counting and observation skills.
Learning Objectives:
In this session, students will:
- Get introduced to MeasureLab and its sensors, especially the Photogate.
- Explore the Photogate sensor by passing fingers through and observing pulses on the screen.
- Develop an understanding of how sensors capture and display information, inspiring curiosity about how technology “sees” and responds.
- Engage in a collaborative guessing game to reinforce counting and observation skills through hands-on exploration.
- Develop curiosity and comfort in interacting with MeasureLab equipment in a playful way.
Teacher Resource:
Session File: ML11.plf (79.0 KB)
Equipment Required:
- MeasureLab core device with Photogate sensor attachment
- Laptop or PC to display live pulse responses on the screen
- Worksheet for guessing and recording pulse counts
- Colouring materials (crayons, coloured pencils, markers)
Teaching Aids:
Projector (optional, to display the live pulse plot on a larger screen for everyone to observe together)
Preparation:
This step has to be done before the session on each workstation/apparatus by the teacher/session instructor:
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Make sure that each computer has Physlogger installed and can detect the Measrelab when connected to it using the provided cable.
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Each Measurelab should have access to a power outlet for sensors that require external power.
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Connect the Photogate to the Measurelab using the following port:
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Launch the Physlogger application and load the session file provided in the resources section.
Your setup will look something like this:
Introduction (10 minutes)
Begin by holding up the device and inviting the students to guess its purpose with more directed prompts.
Guide the discussion with focused questions:
- “Look closely at this device. Do you think it can notice things moving around it? Or maybe it’s used to measure something specific?”
- “What do you think will happen if we move something in front of it?”
Reveal MeasureLab’s Purpose:
- “This device is called MeasureLab, a tool that helps us measure and observe different things. And today, we’re going to use one of its coolest features to explore something new and fun!”
Introducing the Photogate:
- Hold up the Photogate part and explain:
“This part here is called the Photogate. Think of it like an invisible doorway. When anything crosses this gate, it senses that movement and we can see on the screen that something passed through. It’s like a counter that keeps track each time something crosses through.”
Engage Curiosity with Questions:
- “Why do you think it might be useful to know if something has moved through this gate?”
- “What do you think would happen if more than one thing crossed through it? Would it be able to tell the difference?”
Setting the Scene for the Experiment:
- “Today, each of you will get to pass your fingers through this gate. But there’s a twist—you won’t all be able to see the screen right away. Instead, your classmates will watch the screen and try to guess how many fingers crossed based on the pulses they see!”
- “Think about it: if one finger creates one pulse, what might happen if someone passes two, three, or even five fingers through at once?”
This interactive setup allows students to start thinking critically about the relationship between movement and measurement while building excitement around experimenting with the Photogate.
Hands-On Exploration: “The Magic Gate Game” (15-20 minutes)
Demonstrating the Photogate with Fingers
- Start by demonstrating the Photogate. Place one finger through the gate and show students the pulse that appears on the screen.
“Look! When I pass the finger through, we see a little pulse. This tells us something crossed the gate. Let’s try with two fingers!”
- Continue by adding fingers, making a new pulse appear with each one, so students can observe multiple pulses for multiple fingers.
- "See how more fingers make more pulses? The screen shows each one, just like a counter!”
Game Instructions: “Guess the Fingers!”
- The Game Setup
- One student will pass the fingers through the Photogate, while the rest of the students look only at the screen, counting the pulses.
- Guessing the Fingers
- Ask the observing students:
“How many pulses did we see? That means how many fingers went through the Magic Gate?”
- Let them guess based on the pulse count, and then check with the student who passed their fingers through to see if the guesses were correct.
- Ask the observing students:
Encouraging Curiosity and Experimentation
- Try Different Speeds
- “What happens if you pass your fingers through slowly? Do you think the pulses will change?”
- Let students experiment to see if the pulses appear differently based on the speed of movement.
Guided Activity (15-20 minutes)
Worksheet Activity: “Count the Pulses!”
Distribute a worksheet with a simple table for students to guess and record the number of fingers or objects that went through the Photogate.
- Guessing the number of Pulses
- Students will draw lines or make tallies or just write the total number to match the number of pulses they observed on the screen.
- Colour the Pulses
- Ask students to colour a box for each pulse they saw on the screen, reinforcing the counting activity visually.
- Drawing Their Own ‘Magic Gate’ Scene
- “Imagine you could use a Magic Gate at home or on the playground! Draw a picture of how you would use it.”
Summary and Reflection (5-10 minutes)
Wrap-Up Discussion:
- “What did you find most surprising about the Magic Gate today?”
- “How did the gate know when we put our fingers through?”
Building Curiosity for Future Sessions
Let students know there are many other ways MeasureLab can observe things:
- “Today, we learned that MeasureLab can ‘see’ objects passing through and show us on the screen. Next time, we’ll explore even more exciting things it can do!”
Reflection Questions:
- “What would you like to try next with MeasureLab?”
- “Can you think of a time in real life where it would be helpful to know how many things pass through a gate?”
Glossary:
- Photogate: A part of MeasureLab that can detect when something crosses its path.
- Pulse: A quick, distinct signal on the screen indicating a momentary detection or change in the system.
- MeasureLab: A special tool that can observe things around us in different ways.