- View more resources from this publisher
Digital Schoolhouse
Tooltip
These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.
Crazy Graphics
This workshop investigates how images are stored as data, and shows the difference that ‘bit depth’ makes to the quality of images and number of colours. It begins by looking at paintings and how, using only paint, images were difficult to edit – however digital images are much easier. Pupils with access to photo editing software such as GIMP (free, open-source software) can make simple adjustments to found images, although this is not critical to the lesson. Learners are then asked to use conditional cell formatting in a spreadsheet application to create simple graphics. They learn that, by increasing the amount of data in each cell and changing the formatting rules accordingly, an increased number of colours can be used in the image. The correlation between bit depth, colour range and overall file size is made clear. Finally, the effect of image compression is examined, and students take a brief look at vector images and how they are stored. The resource is planned as an extended enrichment or collapsed-timetable activity, but could easily be adapted for teaching over a series of lessons. Digital School House is associated and fully supported by Ukie
Show health and safety information
Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.
Downloads
-
Crazy Graphics 4.04 MB
-
Crazy Graphics Teaching Guide 503.76 KB
-
CS Unplugged Outline 138.3 KB
-
Modified Images 1.26 MB
-
Pikachu 12.03 KB
-
Pixelated 10.16 KB
-
Sample Images 1.01 MB
Show downloads
-
Crazy Graphics 4.04 MB -
Crazy Graphics Teaching Guide 503.76 KB -
CS Unplugged Outline 138.3 KB
-
Modified Images 1.26 MB -
Pikachu 12.03 KB -
Pixelated 10.16 KB
-
Sample Images 1.01 MB
Download all files as a .zip6.03 MB
Information on the permitted use of this resource is covered by the Category Three Content section in STEM Learning’s Terms and conditions.
