Watching both kids over the entire summer, looking to keep things fresh and educational

Hi all,My wife and I have decided to pull our 2yo and 4yo sons out of daycare for the summer, since we can't afford it on one salary. For at least the weekday mornings and afternoons, I'll be alone with them, and they are a handful with even both of us watching them.I'm eager to create lesson plans (we're both teachers) which will keep them engaged and fresh, so they won't miss a beat when they go back in August. So far I found some Bingo Boards that are more or less appropriate for them to use.What would you guys recommend?Edit: Sorry, I forgot to mention that I love in an apartment. We have pools, parks, trails, and splash pads nearby, though! via /r/Parenting http://bit.ly/2WrHaHi