Unit 1 is free — every worksheet, answer key and packet.La Unidad 1 es gratis — todas las hojas, claves y paquetes. Units 2–11 come with the full course. Las Unidades 2–11 vienen con el curso completo. See what’s included →Ver qué incluye →
Worksheets and answer keys, ready to print.Hojas de trabajo y claves de respuestas, listas para imprimir.
Find your starting pointEncuentra tu punto de partida
1
Mod. WorksheetsHojas modificadasSee it worked out first, then take over as the examples fade.Ve el ejemplo resuelto y luego continúa a medida que el apoyo disminuye.
2
Guided PracticePráctica guiadaSame problems, three zones. Start where you are — first step shown, hint only, or on your own.Los mismos problemas en tres zonas. Empieza donde estés — primer paso, solo una pista, o por tu cuenta.
3
Lesson WorksheetsHojas de lecciónThe problems with no support. Ten per lesson, two challenge finishers.Los problemas sin apoyo. Diez por lección, dos de reto al final.
Know your lane. Be good in it. Look to expand outside of it when you are ready to grow.Conoce tu carril. Sé bueno en él. Busca salir de él cuando estés listo para crecer.
EN/ES vocab sheets ship with each unit's worksheet batch.
Bilingual practice packets, labeled by unit and lesson. The Unit·Lesson tag on every problem points to exactly where to get help on the Hub. All packets include built-in work space — no separate paper needed.
Step-by-step solving methods with answers, for every worksheet plus the original packet.
Security note: client-side gate — deters casual peeking, bypassable via page source. For real protection on IONOS use .htaccess Basic Auth or password-encrypted PDFs.
Packet APractice Packet A — Teacher Key (113 problems, worked steps)Open →
Packet BPractice Packet B — Teacher Key (198 problems, worked steps)Open →
Packet CPractice Packet C — Teacher Key (198 problems, worked steps)Open →
Guided Practice — first step done for you
Same problems, three zones: the first step shown, a hint only, or on your own. You pick where to start — and you can always come back.Los mismos problemas en tres zonas: el primer paso, solo una pista, o por tu cuenta. Tú eliges dónde empezar — y siempre puedes volver.