Homeschooling the elementary years can be a struggle. The need to supplement certain subjects, find motivation to push through others and make room for fun and memory making are all important things to consider - but don't let it overwhelm you. Engage your kids in helping you choose things. Often student led learning is the most rewarding.
Below are links to curriculums we used during those years.
Below are things you might find helpful as well
Homeschool Elementary Workbooks
Homeschool Elementary School Supplies
Homeschool Elementary Manipulatives for Math and other things