MASTERITRAIL / HIGH SCHOOL · GRADES 9–12
Explore courses and activities in your school level.
Explore your levelMASTERYTRAIL · EXPLORE / EXPLORA
Start with a lesson or activity below. To continue into account-required content, sign in or create an account. Student access also depends on enrollment and consent.
Empieza con una lección o actividad. Para continuar con el contenido que requiere una cuenta, inicia sesión o crea una cuenta. El acceso de estudiantes también depende de la inscripción y el consentimiento.
Guest learning work is temporary and is not added to a student record. Students should use their teacher’s join instructions or parent-managed enrollment. Creating an account does not bypass consent or enrollment requirements.
Kindergarten · Grade 1 · Grade 2
Six public parent-led lessons: three math discoveries and three reading adventures with sounds, sh, and two-part words. A grown-up reads; the learner draws, folds, points, or tells. Paired Parent Guides and printable manual logs are included.
No sign-in needed. These are selected activities, not K–2 enrollment, full courses, or saved learning.
Open K–2 paper activities →High school subjects
Learn an idea, study a worked example, try guided practice, and apply it independently. Your work here is temporary and ungraded. Each lesson covers a selected topic, not an entire course or exam.
Choose a subject, then open its lesson.
Algebra I
Build and check linear models using stories, tables, and plotted points.
Your work is temporary and ungraded. This lesson covers one selected topic. Sign in or create an account to continue into account-required content; enrollment and consent still apply.
Explore Algebra IHigh school · U.S. History
Enter the intelligence HQ, evaluate evidence, and test a strategy. The cinematic introduction remains available above.
Explore / Explorar →Reward Arcade · Entertainment
Try a matching game. Arcade scores never count toward academic mastery.
Explore / Explorar →Already signed in but still seeing this page? Return to your account to check whether your enrollment or consent needs attention.