CSE I - Mid-Unit Recap Review - Lesson

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In this unit, we’ve been focusing on how to use ​

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in our
Scratch ​

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by learning more about ​

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.

Open Ended

What are some of the new concepts we have explored?

Open Ended

We have applied what concepts?

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Let’s review the topic of ​

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so that we can see
how all of these new ​

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fit together.
Then, we’ll ​

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graphics
and loops before starting our ​

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activity.

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​

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happens when we are shown a series of still
​

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at such a ​

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speed that our ​

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is tricked into thinking it sees ​

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.
Let’s break that definition down!

Open Ended

What are still images called?

Open Ended

What do we call the speed at which the frames are shown?

Open Ended

About how many frames per second (fps) is a good frame rate for us to see motion?

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Remember that in ​

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, we can ​

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the ​

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using a ​

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.

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We also learned about ​

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kinds of digital ​

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formats: ​

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images and ​

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images.

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We learned that ​

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images:
● Are made using individual ​

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pixels
● Are ​

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files
● Do not scale well

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, but do not look smooth
when zoomed in on.

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, it is
probably a bitmap file.

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We learned that ​

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images:
● Are made using mathematical ​

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,
instead of pixels

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files
● Can be ​

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and still look good
● Are ​

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images that work better for
digital animation

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​

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s are ​

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images that store lots of detail but do not
scale well.

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are ​

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, clean graphics that may have less ​

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but
scale well in size.

Open Ended

In computer programming, what
are loops?

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​

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block: a ​

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-controlled loop.
The block here will loop 10 times and then stop.

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block: a loop that will ​

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​ forever
until you tell it to ​

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!

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First, the sprite will ​

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the direction of 90° (or, to the right).


The ​

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will turn 10° to the right 36 times, ​

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for 0.1 seconds after each turn.


After turning 360°, the sprite will say, “I’m dizzy!” This will

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since it is not part of the ​

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block.

Open Ended

What are the recommended steps to debug?

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Now, it’s time to ​

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some programs and ​

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them so that they
run ​

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!

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Step 1 Log intoProject ​

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.


Step 2 Click to view Unit 2, then find ​

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lesson.


Step 3 Open ​

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: Today’sMission!