Moving Project

There are basically 3 ways to move sprites in Scratch. Try the file moving.sb and answer the questions below:

1.Click the green flag. What do the three animals do?

2.Look at the scripts for each of the 3 sprites. What 3 blocks do all three sprites use?

3.What blocks does the cat use to move?

4.What block does the dog use to move?

5.What block does the monkey use to move?

6.Describe in your own words how the move block works.

7.Describe in your own words how the go to xy block works.

8.Describe in your own words how the glide block works.

9.Some of the blocks require x: and y: coordinates. Place the mouse over the white window and look at the mouse x: and mouse y: numbers underneath the bottom. How are the x: and y: coordinates determined in Scratch?

10.Use what you’ve learned about moving to get the cat to run the bases (as realistically as possible – bases are run counter clockwise) in baseball.sb. Make sure that when you click the green flag, the cat starts at home plate again.

Exploring Computer Science

Scratch #2 - Baseball

Objective: Demonstrate your understanding of the different ways that Sprites can move

and change costumes in Scratch.

1.

I

n this assignment, you will "remix" one of my assignments.

2. Open the following link

and click on the

remix button.

3.

You are to add the code

so that the cat runs the bases and

completes

a home

run.

a.

The

cat must

stop back at

home plate when it

has finished

running the bases.

b.

The

cat needs to face

the base

it is running

to.

c.

The

cat’s legs

must move

making

it look like it is running. It should not look like

it is hopping or skipping, but running.

d.

The

cat must stop running

when it

gets back to home base.

e.

Make

sure

the

cat stays in the lane

and doesn’t run in the grass!

f

.

The

cat needs to actually

run

to bases. You will lose points if the cat moves too

slowly, too quickly, or

if the cat stops at any

base.

The

cat must be fast!

In this assignment, you will “remix” the baseball.sb

Open the scratch document emailed to you.

You are to add the code so that the cat runs the bases and completes a home run.

Baseball rubric

Do you have? / Points Possible / Yes / No / Points Earned
Scratchy runs to all of the bases, without stopping at first, second, or third base when you click on the green flag. / 5
Scratchy changes directions to face the base it is running to. / 5
Scratchy stops running at home plate when it has finished running the bases.
Scratchy also starts over at home base when the green flag is clicked. / 3
2
Scratchy’s legs move making it look like he is running. / 2
Another character chases Scratchy around the bases. / 3
Scratchy stays in the lanes and off the grass. / 3
Scratchy runs fast. / 2
Completed on time / 5
Total : / /20