how to use khan academy for lower grades, kindergarten, first, second, :)
make a log in for each child / student: https://www.khanacademy.org/students
I like to use their name for the username and their birthday or nickname for the password.
log child in, put them to work and stay close so you can help them with any snags.
for basic addition and subtraction start here: https://www.khanacademy.org/math/arithmetic/addition-subtraction you can use the choices along the left side to move on to more challenging problems
number blocks: https://www.khanacademy.org/math/arithmetic/addition-subtraction/addition_carrying/e/representing_numbers
for telling time: https://www.khanacademy.org/math/arithmetic/telling-time/e/telling_time_0.5
place value: https://www.khanacademy.org/math/arithmetic/multiplication-division/place_value/v/place-value-1
more choices https://www.khanacademy.org/math/arithmetic
I hope these links help simplify and streamline your use of Khanacademy.org