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Step 7 Drag a touching mouse-pointer block from the Sensing block and use it
with an if block. Click on the drop-down arrow present next to touching
mouse pointer block and select edge from the list.

Step 8 Drag a start sound Meow from the Sound if
blocks and place it inside the if…then block. touching edge ? then

Step 9 Click on Green Flag button to see the start sound Meow

output.

Role of Video Sensing extension in Scratch

Keep on clicking this icon until the
cat reaches the edge.

Using the Sensing Menu
Now use the Sensing menu to ask the user for age, user types in age, or display the stored

answer.

Now, create a variable named age. when clicked

set age to 0
After creating the variable age, let us create the
following block stack for the sprite: Now, click on the ask What’s your age? and wait
green flag. set age to answer

say Join I Know your age is answer

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