Last night Mack and I worked on three posters for him to use in today’s oral report on cell membrane structures and functions in City High.  I don’t know what type of cells.  Mack said more than once, “That’s the cholesterol,” and I saw a “glycoprotein” label, so I surmised that they’re cells of a type in animals.  But I never asked Mack what we were drawing.  I just helped.  

Mack did research on the internet, using my computer, to learn all the functions and processes of the components of cell membranes, including glycoproteins, glycolipids and phospholipids.

Although I had given numerous colored markers, Mack had only brought two pencils, a pen, and a box of crayons from a sibling, .

I contributed two bullet-tip dry-erase markers, a white plastic eraser and a big, bullet-tip, black Bic marker.  If I hadn’t bought that a couple of weeks ago, the drawings would have been so weak.  While Mack drew the other poster, I drew this one (above and below).

I colored it with crayons, as that’s what was at hand at night …

Then I drew this poster while Mack was still on the Internet.

Then I colored it with crayons while Mack was still on the Internet.

This is the poster that Mack drew then colored.