Keeping the 3 yr old busy while taking care of the baby

Today is a day of learning at my home.  My nine month old seems to need a lot of attention today for some reason, I think he's teething.  My three year old is becoming a little more independant as the days go by, which is very good for me.  At the same time I do not want him to be glued to the television all day long.  I came up with an activity for him to do.  While watching four squares last week they had this catchy poem that my son memorized, but we changed it up a bit.  It goes like this:  Sunday is fun day, monday we go shopping, Tuesday do the chores, Wednesday have a bubble bath and Thursday go outdoors, Friday night is movie and Saturday sleep in.  I brought out his 12 month calendar and went through the days of the week with him.  He's still trying to catch on to it all.  I asked him to draw each activity from the poem on each day of the week.  It took him quite a bit of time to do, but finally he did it.  Kids are smarter than you think they are.  Even though this was only the first time i taught him his days of the week, he memorized them very fast.  Try this activity with your little ones and share some more with me please.  I love doing new educational things with my kids.  thank you for your time.