It’s exciting to see that the Order of Operations is still being properly taught somewhere in our failed school system in America!
Can you teach your 4th graders the aritmetic properties of fractions? Way too many students do not understand that multiplication/division rules do NOT apply to addition/ subtraction (& visa versa) and totally fail algebra when they get to simplifying rational expressions & solving eational equations.
It's so much easier to multiply fractions than add them when teaching kids they have to have a common denominator.
They really whine when they find out they're not done and they need to reduce!