1942 often is overlooked in discussion of America's involvement in World War II, since it is overshadowed by the success of the D-Day Invasion in 1944 and the final days of the island hopping campaign leading to the defeat of Japan.
However, this reading - only two pages! - gives students a great overview of the important events of 1942, the first year of America's fighting in World War II, broken into two parts: The European & Northern African Theater and the Pacific Theater.
Use this text however it may fit into your curriculum. Perhaps a close-read? Enjoy!