I love calendar time in my classroom! I created a supplement for it here. It is available for free! This includes two skills for your calendar board for your K-2 classroom. It includes pictures of 15 2D and 3D shapes. Flip over a new shape each day (rotating the pictures so that the shapes are shown from a variety of angles) for students to practice identifying and naming shapes, no matter how they are turned. It also includes a pattern of the month for each month of the year. You can use stickers or stamps, adding a sticker/stamp each day to follow the pattern. Example: October Pattern ABB=red leaf, yellow leaf, yellow leaf.