2nd

This Study Jam video uses two cartoon characters to describe the processes of weathering and erosion.  The content and scientific explanation is great and created with young children in mind.

Here is a very elementary video worth showing your students in K-2
grade.  It is definitely very elementary, but Sesame Street does an
excellent job discussing subtraction.  It is quite entertaining.

Here is a rap song about the different shapes and angles.  Words that
are discussed are rhombus, right angles, triangles, acute angles,
parallelograms, etc...  It features elementary students and is sung at
the elementary grade level.

This is a cute and simple song that explains what the denominator in a fraction is.  

This is a great video to help younger students learn or practice counting by twos.

This is a great video to help younger students learn or practice counting by threes.

This is a fun place value song for younger students. It can reinforce place value and also introduce base tens.

This is a fun song to help introduce place values and base tens to younger students.

This is a great video to help students understand how to write place values in expanded form.

This is a fun video to help students understand and compare greater than > less than < and equal to =.