CK-12 Foundation
Stem-and-Leaf Plots and Histograms: Digital Photography
Cameras use histograms to communicate the exposure of a photograph. An interesting lesson uses this idea to help learners deepen their understanding of histograms. It highlights the skew of the graphs by showing under- and overexposed...
Curated OER
ESL: Demonstratives-This/These/That/Those
In this ESL demonstratives instructional activity, students match pictures to sentences, order words correctly to form sentences, complete multiple choice questions and fill in blanks with correct demonstratives: this/that/these/those.
NASA
Nasa: Play Pixel This!
This site from the National Aeronautics and Space Administration provides great information on the subject. Learn to see things more clearly by studying about pixels and how they are used in cameras.