3D Shapes Worksheets for Grade 1 | Free Printable PDFs 3D shapes worksheets for grade 1 are a great way to introduce the concept of different shapes that kids observe in their surroundings. 3d shapes possess three dimensions, which are length, width, and height. Examples of 3d shapes are cube, cuboid, cylinder, prism, and sphere. Benefits of 3D Shapes First Grade Worksheets