Sixth graders learn that every digital photo is really a grid of tiny colored squares called pixels, explore resolution and RGB color, and match each image term to its meaning.
Students will be able to…
Zoom far into any photo and it breaks into tiny colored squares. What are pixels, and how do they turn a grid of data into a picture?
Project this and match each digital-image term to what it means — tap a term, then tap its meaning.
Tap any phase to open the teacher moves and student actions.
Zoom far into any digital photo and the smooth picture breaks into tiny colored squares. What are those squares, and how do they make an image?
Students match each image term to its meaning.
Students color a pixel grid.
Students compare detail.
Students reflect on digital images.
Aligned to the CSTA K-12 Computer Science Standards and the ISTE Standards for Students.
Represent data using multiple encoding schemes, such as pixels for images.
Organize and present collected data to make it useful.
Explain how data is represented and stored in a computing device.
Understand how data is collected, represented, and stored digitally.
Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.
Have students draw the same shape on a small grid and a large grid, compare the detail, and explain why more pixels look sharper, so resolution becomes something they can see. A printable digital-images worksheet is in the Computer Science library.
Tap a card to flip it, then rate whether you knew it. Built from this lesson’s vocabulary.
A quick self-check with instant feedback, drawn from this lesson’s key terms.
A print-and-go review sheet with a built-in answer key. Tap “Show answer key” to reveal answers, or print the clean version for students.