The purpose of this activity is for students to match story problems to equations (MP2).

• “En la siguiente actividad, van a resolver problemas-historia y a crear ecuaciones que les corresponden” // “In the next activity, you will solve story problems and create your own equations to match them.”

The purpose of this activity is for students to solve Add To, Result Unknown and Take From, Result Unknown story problems. Students fill in an equation, which encourages them to connect the action in the story to the meaning of the and signs (MP2).

• Invite a student who drew symbols, such as circles, for the second story problem to share.
• “¿Qué significa 9 en la historia?” // “What does 9 mean in the story?” (The 9 pattern blocks Elena used to make the train.)
• “¿En qué parte del dibujo de _____ ven 9?” // “Where do you see 9 in _____’s drawing?” (There are 9 circles altogether, to represent the 9 pattern blocks on the train at the beginning.)
• “¿Dónde ven la resta en el dibujo de _____?” // “Where do you see subtraction in _____’s drawing?” (There are some circles crossed out, which means the pattern blocks were taken away, or subtracted.)
• “¿Qué significa 3 en la historia?” // “What does 3 mean in the story?” (Elena took away 3 pattern blocks.)
• “¿En qué parte del dibujo de _____ ven 3?” // “Where do you see 3 in _____’s drawing?” (There are 3 circles crossed out, which represent the 3 pattern blocks that Elena took away.)
• “¿Cuántas fichas geométricas tiene Elena ahora? ¿Cómo lo saben?” // “How many pattern blocks does Elena have now? How do you know?” (6, I counted the circles that aren’t crossed out.)
• Read the equation as “9 menos 3 es igual a 6” // “9 minus 3 equals 6.”
• “Podemos escribir eso así:  ” // “We can write that as .”

The purpose of this activity is for students to choose from activities that offer practice with number and shape concepts.

Students choose any previously introduced stage from these centers:

• Pattern Blocks
• Geoblocks
• Grab and Count
• Find the Pair

• “Cuando trabajan en los centros, ¿prefieren trabajar solos, con un compañero o en grupo?” // “When you work in centers, do you prefer to work by yourself, with a partner, or in a group?”