Tim Holtz Media Ruler unit:each Sadao Naito approaches animal anatomy

Sadao Naito approaches animal anatomy from an artist's perspective rather than a scientific one

The 176-page format provides room for detailed breakdowns and progressive examples

adding stippled shading to illustrations

Young scientists get immediate satisfaction from creating functional products while absorbing chemistry concepts through direct observation and manipulation

The instructional guide walks through fundamental techniques specific to these tools: building value through marker layers

Tim Holtz Media Ruler unit:each Sadao Naito approaches animal anatomyMeasuring and cutting on slippery work surfaces leads to sliced fingers and ruined projects. This ruler stays put. Raised grip rails on the underside bite into paper, cardstock, and mixed media substrates, keeping the edge stationary while you draw or cut. Recessed steel cutting edges protect both blade and ruler, your knife rides along the inset channel rather than climbing onto the ruler surface, maintaining accurate cuts through repeated use.