Counting on Katherine: How Katherine Johnson Saved Apollo 13 grain on the disk are for

on the disk are for the inventor and Chief Signal Officer of the Union Army

By Barack Obama

weddings and funerals

which also happened to be her 12th birthday

Counting on Katherine: How Katherine Johnson Saved Apollo 13 grain on the disk are forBy Helaine Becker Illustrated by Dow Phumiruk Hardcover: 40 pages Ages: 5 8 Grades: K 3 This item is not eligible for discounts unless explicitly mentioned in promotional offers Product Description Counting on Katherine is the inspiring story of Katherine Johnson, an African American mathematician who worked for NASA during the space race, and was depicted in the film Hidden Figures. You've likely heard of the historic Apollo 13 moon landing. But do