Having rhythm troubles? Try using words instead of numbers to count. These are some of the words that I use in my studio:
quarter notes - blue
eighth notes - jello (JE-LO)
sixteenth - watermelon
half notes are harder - I either use HE LLO or just 1-2
whole notes - "whole note hold it"
going from eighth notes to quarters can be really tricky, especially for little ones. They tend to play the eights really fast and then slow down on the quarters. Stop and have them say it a couple of times (jello jello blue blue...or whatever the pattern,) then play it while you say it a couple of times and then let them try it alone.
For more info on saying then playing visit:https://www.ymonline.com/index.cfm?fuseaction=product.display&Product_ID=4076