In Google sketch up the number one tool that was hard to use was the rotation tool because it kept messing up and glitching. The number one tool that i used would of had to be the materials and color tool because it was simple and never messed up or glitched. Another tool that was easy to use was the line tool because it was the most simplest tool in the whole project. Another tool that was kind of hard was the push and pull tool because sometimes it would go in the opposite direction that you would want it to go to.