to them as read alouds. You can find many lists online. There are tons of counting books I would think that would be a biggie for that age group.

https://www.fractuslearning.com/best...-for-children/
Maybe do some art where you have ten item, five items, twenty items. Then show how if you put groups of the pictures together you can 100 items! The items could be anything they are studying in other subject. For example if they are studying flowers, trees, animals or dinosaurs in science you could use those.

Learn some counting songs on YouTube this summer.

Teach them to your students.

Introduce the idea of even and odd numbers. Show them with counters how you can divide an even number into two equal groups but you can not do that with odd numbers. You can do this even using the kids in class and divide them into groups.

Buy some large stencils of numbers from a hardware store. They are normally used for painting your address in front of your home on the sidewalk or somewhere else. Teach the kids how to use them with them prepped on paper. Then they can do a crayon rubbing of numbers 1 -10. Then they can draw that number of objects under or above their number.

Have a rice or corn seed bin with plastic magnetic numbers mixed inside as well. The students can find numbers 1-9. Or find a number and write and draw a pic of that number or just play and feel the numbers as a tactile experience.

Have students work in groups of two or three. Have them lie on the floor and shape their bodies as each number 1- 9. Take photos of their success and share at a later date on screen where they can all see.

Play board games like Chutes and Ladders where they have to learn to roll a die and count as they move their marker. Put the die in a see through plastic container for use.

Once they have learned how to do some of these number activities from your modeling have have them practice them in rotations.

Okay that is all I can think of right now. Good luck to you! Remember you are teaching the basics of number sense. Make it fun. Repeat many times so it begins to sink into their brains. You can do it!

Cute ideas here worth exploring.

http://busytoddler.com
Reminders of what you already know but forget when teaching older children.

https://www.wikihow.com/Teach-Math-in-Preschool
http://www.scholastic.com/parents/re...s-preschoolers
http://www.pbs.org/parents/education...-kindergarten/
http://www.pbs.org/parents/education...bs-kids-games/