Actually, as I look at carbon more closely, that's exactly what they're drawing. The inner circle (s orbital) has two yellow dots (electrons) on it, and the outer circle (p orbital) has 4 yellow dots. It does look like they totally ripped off this lady's drawing though: http://www.dorlingkindersley-uk.co.uk/nf/ClipArt/Image/0,,_1...
Clearly they aren't drawing the orbitals for water, which I already stated.
But you're right, carbon is probably too big. Wolfram alpha says the diameter of carbon is 134pm, and we all know WA is right about everything.
The sizes of the atoms in the water molecule have been adjusted to
make them consistent with other atoms depicted in the activity,
although the overall diameter of the molecule is the same.
Clearly they aren't drawing the orbitals for water, which I already stated.
But you're right, carbon is probably too big. Wolfram alpha says the diameter of carbon is 134pm, and we all know WA is right about everything.