Summary

With only three days left in the Penderwick family vacation, Jane sneezes and, feeling her head, Rosalind sends her up to her room to rest. Jeffrey arrives, finally free after his mother and Dexter leave for Vermont. Bored, Jeffrey invites Skye and Rosalind to come back to Arundel Hall with him, but Rosalind begs off to stay with Jane. Batty asks if she can come, and Jeffrey agrees.

In the music room at Arundel Hall, Jeffrey leads Skye to the grand piano sure she’ll enjoy it because she enjoys math. He sits on the bench, patting the space beside him. Batty makes a fort as Jeffrey plays a segment of Bach for Skye, and then asks her if she hears the mathematical progressions. She doesn’t. He explains that notes are like fractions. Jeffrey tries again and Skye imitates...