I just finished making this Smart Board lesson for some first graders at school.  Instead of using base ten blocks for the little firsties, we decided to use snap cubes sticks to help them master place value.  I really like using these as opposed to base ten blocks at this age.  Snap cubes (or unifix cubes) tend to be easier for their little hands to grab.  They can always easily pull them apart and count them if they don’t trust that a stick of ten is truly a ten.  Below is the simple SmartBoard lesson I made, which is available on TPT.