A picture on a screen is a grid of tiny squares called pixels.
A picture on a screen is a grid of tiny squares of color. Each square is a pixel, and each pixel has just one color.
Together the pixels make a picture, like the tiles in a mosaic. From far away, the squares blend into a smooth picture.
More pixels mean more tiny squares, so the picture shows more detail. A photo has millions of pixels.
A computer remembers each pixel as numbers made of ones and zeros, so a picture is a long list of numbers.
These are some of the questions on the sets. The printable sheets have more and an answer key.
One tiny square of color. Pictures on a screen are grids of pixels.
16. 4 × 4 = 16.
The 16 by 16 grid. More pixels give more detail.
No. Only pictures on a screen are made of pixels.
As numbers. Numbers made of ones and zeros.
With a grown-up, draw a grid on paper, or use squared paper. Colour in squares to make a tiny picture, like a heart or a smiley face. Make a small grid and a big grid. Which picture looks smoother?
Do the Mission: draw a grid on paper, or use squared paper, and color in squares to make a tiny picture like a heart or a smiley face. Make a small grid and a big grid, and ask which picture looks smoother.
