Construction vehicles asks your child to identify 10 familiar cartoon work machines. He learns in "Practice" mode and then can "Take the Test" to see how many he can name. The "Learn More" section has photos and descriptions of each vehicle. This app is easy enough for the toddler or preschooler to play independently but still holds interest for the child who can read. Educational and fun, Construction Vehicles is designed to increase vocabulary by engaging the very young using a subject they love.