A Small Brag on the Girl

Following in her parents' footsteps, S can now add certain numbers.

There are pieces of paper floating around the house that look like this:

1 + 1 = 2
2 + 2 = 4
4 + 4 = 8
8 + 8 = 16
16 + 16 = 32
32 + 32 = 64
64 + 64 = 128

Look familiar? Now we just need to teach her binary notation.