Showing posts with label Math. Show all posts
Showing posts with label Math. Show all posts

Tuesday, March 23, 2010

The Lion's Share



Written and illustrated by Matthew McElligott
Most enjoyed by 1st through 4th graders

Matthew McElligott has a way with math concepts that makes them so simple to understand. In 'Bean Thirteen', reviewed here, he covered simple division. In 'The Lion's Share', he tackles fractions and does it so well it can almost be said that fractions are easy (note, I said almost!).

Each year, the Lion holds a special dinner party for his animal friends. Ant is invited for the first time and is quite excited. Wanting to make a good impression, he arrives on time only to discover that the other guests are there already, indulging in a glorious feast but displaying terrible table manners. When the lion serves dessert, he invites his guests to help themselves and each does in his own greedy way. The elephant feels that half is his fair share so he takes half of the cake. The hippo feels that he can take half of what's left since the elephant took half. The gorilla takes half again and so on until the portion left for the ant crumbles before he can take a bite. Feeling terrible, the ant offers to make the lion a cake. When the others hear this, they wish to outdo the ant, offering twice what the guest before him has offered. So the beetle offers to make two cakes, followed by the frog who offers four, and so on until the elephant, who started the whole greedy affair, must offer a staggering number of cakes in order to save face.

Not only does 'The Lion's Share' excel at showing the effects of halving and doubling, it also serves as a great object lesson for greed and humbleness. Kids see what happens when one is self-centered but they'll cheer for the simply humility of the ant. The book demands using real cake to demonstrate the halving for the kids. M&M's could be used to show the doubling. It would be an object lesson that would stay with the kids and I'm sure would soon be a favorite. I'll be on the look-out for more math books by Matthew McElligott.

Friday, March 12, 2010

Bean Thirteen


Written and illustrated by Matthew McElligott
Most enjoyed by readers in 1st through 4th grade

Division can be a tough concept to understand. The multiplication tables are memorized as well as addition and subtractions facts. But division can be particularly sticky. That's when it's great to have a book like 'Bean Thirteen' to help young mathematicians better understand the idea of division.

Ralph and Flora were picking beans for dinner. Ralph thinks the twelve beans they've chosen is enough, but Flora wants one more. Yikes, thinks Ralph, not the dreaded 13th bean! That's an unlucky number. The 13 beans come home anyway, despite Ralph's fears, only to confound the pair as they try to divide the beans equally among dinner guests. First, it's two groups of six but that leaves the unlucky 13th bean by itself. Then it's three piles of four beans but again, the 13th bean is left. Ralph and Flora continue to try to divide the beans equally, only to find that letting the dinner guests help themselves solves the problem.

The illustrations support the text with bright colors and clear views of the various ways the beans are grouped. Grab some beans (jelly beans would be perfect for this time of year!) and try practicing the same groupings Ralph and Flora create. A fun, and edible, way to explain a difficult concept!