Power Maths by Sidney Schuman Go straight to each calculus power rule. No infinitesimals. No concept of the limit.Just simple geometry and algebra. 
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Disclaimer Power Maths is a precalculus taster, not an alternative way to teach calculus 

Here are the predrawn graphs you need for the differential power rule 
Grateful thanks to David A Smith for his encouragement and to Lana Holden for the applet
(The applet was used in an earlier version but Java is no longer supported by browsers)