You don't have to be in a classroom to learn something new. Spend some time at Hotoku Museum and find out more about the wonderful world around you.
You'll have sightseeing choices galore in Odawara. Hotoku Museum is a good place to start here, but there are plenty of other worthwhile spots to discover. Hakone Kowakien Yunessun, Hakone Open Air Museum, and Hakone Gora Park are not far from the museum and will round out your day nicely.