Introduction Have you ever wished you could copy a drawing ... Pantographs are easy ways to create similar figures. Can you find the factor by which your pantograph scales the drawings for each ...

The technique was faster and more cost-effective than hand-tracing original documents, and caught on as an easy ... to use blueprinting to copy their large-scale drawings. More recently, the ...

The newest drawings incorporated more of the rock features, only needing a few added painted lines to capture the outlines of the animals. The art can help viewers connect with the people who made ...

It became easier to find technical information on prehistoric animals’ anatomy ... Compare a cat skull and a living cat, and it’s easy to see that skeletons aren’t always a good reflection ...

and other shapes combined with drawings of animals could have expressed information about the deer, cattle, wild horses, and mammoths that once roamed the continent. The marking themselves date ...