# data[].attributes.attachment_link.title
Mathematics Glossary " Glossary | Common Core State Standards Initiative

# data[].attributes.attachment_link.description
Counting on. A strategy for finding the number of objects in a group without having to count every member of the group. For example, if a stack of books is known to have 8 books and 3 more books are added to the top, it is not necessary to count the stack all over again.