Quizizz is an online platform that provides teachers with interactive worksheets to help their students learn mathematics, including calculus and infinite sequences. With Quizizz, teachers can easily create custom worksheets to assess their students' understanding of the material. Quizizz also provides teachers with detailed analytics to help them track student progress and identify areas for improvement. With its intuitive interface and powerful features, Quizizz is the perfect tool for teachers to engage their students in mathematics.