The IXL Ultimate 3rd Grade Math Workbook, Activity Book for Kids Ages 8-9 Covering Addition, Subtraction, Multiplication, Division, Fractions, Geometry, and More Mathematics (IXL Ultimate Workbooks)

The IXL Ultimate 2nd Grade Math Workbook, Activity Book for Kids Ages 7-8 Covering Addition, Subtraction, Place Value, Geometry, Measuring, and More Mathematics (IXL Ultimate Workbooks)

The IXL Ultimate 4th Grade Math Workbook, Activity Book for Kids Ages 9-10 Covering Addition, Subtraction, Multiplication, Division, Fractions, ... and More Mathematics (IXL Ultimate Workbooks)

The IXL Ultimate 5th Grade Math Workbook, Activity Book for Kids Ages 10-11 Covering Multiplication, Division, Fractions, Decimals, Geometry, and More Mathematics (IXL Ultimate Workbooks)

The Golden Ratio: The Divine Beauty of Mathematics

Quadrivium: The Four Classical Liberal Arts of Number, Geometry, Music, & Cosmology (Wooden Books, 33)

How to Solve It: A New Aspect of Mathematical Method (Princeton Science Library)

Basic Mathematics

McGraw-Hill Education Geometry Review and Workbook

Geometry Part 1 QuickStudy Laminated Reference Guide (Quick Study Academic)