Scratch Lesson 2

Log into your account Open the internet browser : Safari or Internet Explorer Type in the URL Log into your Scratch account. scratch.mit.edu

Chapter 1 - Section B When you have logged in, click CREATE to open a new blank project. Open your text book on page 9. Complete the 8 tasks in section B Sprite Skills Practice.

Repeat Click File. Click GO TO MY STUFF. If untitled projects appear in your list delete them by clicking on the blue delete to the right of the window. Click on SEE INSIDE to open your Twinkle, twinkle program.

Repeat Did you notice that the 3rd and 4th lines of the tune are identical? Could we avoid including the same seven blocks twice here? Now click on the red writing below to watch the Using Repeat video.

Separate the lines of the song. Each line of the song consists of 7 instructions to play a note. Pull each block of seven instructions apart to separate each line of the song.

Repeat Remove the 7 instructions for the 4th line of the song by clicking on the scissors and then on the 1st instruction in the 3rd group of instructions

Repeat From the control block, pull across a REPEAT command and fit it around the 3rd block of instructions (that play line 3). Set the repeat command to REPEAT 2 that is repeat twice.

Repeat Now join all the blocks up together again and double click to play the song.

Saving Click File. Click Save Now. Click GO TO MY STUFF.

Copybook Draw a line under your work from Lesson 1. Put today’s date and the heading Lesson 2 on the next line in your copybook. Answer the following questions in your copybook.

Question 1 Look at the script on the right. (a) If this script is run, how many times will the cymbals(drum) play? (b) If this script is run, how many times will the cat meow?

Question 2 Look at the script on the right. Explain how you would change this script to have the cat meow 12 times.

Question 3 Look at the script on the right. (a) How many steps does the sprite move in total? (b) By how many degrees does the sprite turn in total?

Logging out Click on your username on the right hand side of the blue bar across the top of the Scratch window. Click Sign out.