Perimeter/Area Anchor Chart showing real life reason to learn area and perimeter = sod / yard and fence! (measurement chart for kids)
Classifying Triangles Anchor Chart (Although technically, scalene, isosceles, and equilateral can refer to sides OR angles. For ex, a triangle with angles of 90 is also isosceles.
Part part whole anchor chart. Great for teaching addition and subtraction. Heavily used in Singapore Math.
Teaching With a Mountain View: Multiplication Mastery Madness!