Summary There's a hole in the bottom of Baa's trough so none of the thirsty friends can have a drink. How can we mend the trough, wonders Jess. Hey, that's the Big Question. Jess decides to ask Horace for help but Horace has a problem of his own. He's trying to make a lovely new musical sound but the square shaped piece of bark he's got doesn't make a very good noise when he clangs it with a stick. Jess borrows the bark to cover the hole in the trough but it's the wrong shape. He decides to ask Mimi for help with making a different shape to cover the hole. Mimi's making a mosaic, but she can't find anything the right shape to fit the square-shaped hole she has. Jess gives her the bit of bark and it fits perfectly! She sings Jess a shapes song explaining all about different shapes around us. Jess finds a squashed clay pot which is circle shaped. It's the perfect shape to mend the hole - and because it's clay the water won't leak out again! They've answered the question. And here comes the rain again so the trough is soon full again with lovely fresh water. Now everyone can have a drink. Yippety Yay!

• Animation
• Family