Teachers can use real objects, photos, and black line drawings to define the words. Be sure to write math words in English and in children’s home languages. Introduce math words. Create a math word wall or incorporate mathematical words into the existing word wall-color-code the math words to make it easier for children to notice them.For example, they might make right triangles red and scalene triangles blue. After finding them in the classroom or outdoors, children can outline the triangles with colored tape.
Identify shapes. Introduce children to different kinds of triangles, such as equilateral, isosceles, scalene, and right. The following strategies and activities can help preschoolers learn to recognize and compare shapes. By using materials such as posters, blocks, books, and games, teachers expose children to various shapes and help them analyze two- and three-dimensional shapes in various sizes and orientations. In preschool, children can learn to identify and name circles, triangles, squares, rectangles, and ovals. Recognize and compare two- and three-dimensional shapes Preschool teachers have numerous opportunities to help children begin to develop their understanding of shapes and space. By the end of kindergarten, children need to demonstrate understanding by analyzing, comparing, creating, and composing these shapes. The second is describing shapes and space (NGA Center & CCSSO 2010). The first is representing, relating, and operating on whole numbers with sets of objects. In the CCSSM, two critical areas make up kindergarten content. The Common Core State Standards for Mathematics (CCSSM) are written to ensure students will leave school ready for work and college. Math can be a part of daily routines, activities, and interactions in preschool. 
They can provide developmentally appropriate materials and opportunities to help preschoolers understand the topic. Preschool teachers can create an environment in which children are eager to explore and learn about math.
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