C3.2 Read and alter existing code, including code that involves sequential events, and describe how changes to the code affect the outcomes.
Activity 1: Sequential Events and Measurable Attribute
Ask students to look at the picture below and read the code that follows:
Ask students the following question: Which of the blocks shown below would be the one to add to the code so that it displays the appropriate measurable attribute?
Source : Scratch Jr.
Have students modify the code to include all measurable attributes inside.
Activity 2: Sequential Events and Time: Days of the Week, Months of the Year, and Seasons
Ask students to read the following code:
7 blocks are intertwined: Events block stating starts on when green flag is clicked. 6 Looks block stating “Sunday within 2 seconds”, “say ‘Monday’ within 2 seconds”, “say ‘Tuesday’ within 2 second”s, “say ‘Thursday’ within 2 seconds”, “say ‘Friday’ within 2 seconds”, “say ‘Saturday’ within 2 seconds”.
Source : Scratch Jr.
The code should name the days of the week. Ask students the following questions:
- What do you notice?
- Do you see a mistake?
- Can you explain it?
Ask students to change the code to correct the error.
Have students create a code to name the months of the year.
Ask students to create a code to name the seasons and months of the year in the correct pattern.