Amazon announced on Thursday that it has reached an agreement to acquire parent/teacher math resource company TenMarks.

TenMarks provides personalized online math instructions and videos at the K-12 levels.

“Amazon and TenMarks share the same passion for student learning. TenMarks’s award-winning math programs have been used by tens of thousands of schools and Amazon engages with millions of students around the world through our Kindle ecosystem,” said Amazon Kindle VP Dave Limp. “Together, Amazon and TenMarks intend to develop rich educational content and applications, across multiple platforms, that we think teachers, parents and students will love.”

“Amazon and TenMarks share a commitment to developing easy-to-implement solutions for schools and families,” said TenMarks co-founder Rohit Agarwal. “We currently offer teachers, students and parents access to effective resources to foster the vision of the Common Core curriculum in math, including scalable professional development and tools for connecting with parents. We back this belief with our business model, where teachers can register and access our product for free, while being able to opt in for premium features, if needed. Going forward, we believe Amazon and TenMarks will create significant innovations in the K-12 arena.”

The deal is expected to close in the fourth quarter. Terms were not disclosed.