interactive and have them equal symbols and their meanings. share other strategies used to check On their dry-erase boards, have their answers (Make sure the students students write the number sentence use the red marker for the number of using the number of boys and girls to girls, the blue marker for the number find the total number of students in the of boys, the black marker for the class. addition and equal symbol, and the Ask the students to check their answer purple marker for the total.) by using the strategies mentioned at Have students turn to their the beginning of the activity. mathematics buddy (shoulder Discuss writing the number of boys partner) for a peer discussion about and girls in different position of the starting the number sentence with number sentence. the total and take away the boys. Ask students what would Record the number sentence on the happen if we started with the paper, using the designated total and took away the colors. 21 14 = 7 − number representing the boys, Record the number sentence on the leaving only the girls in the chart paper, using the designated class. colors. 21 7 = 14 − Have students write the problem on GE will draw arrows to accentuate the their dry erase boards. Students need pattern on the chart paper. to check their answer with the GE will write the four key points on the teacher’s answer. chart paper. Ask the students to do the same with taking away the number of girls. Have students write the problem on their dry erase boards. Students need to check their answer with the teacher’s answer.
interactive and have them share other strategies used to check their answers (Make sure the students use the red marker for the number of girls, the blue marker for the number of boys, the black marker for the addition and equal symbol, and the purple marker for the total.) Have students turn to their mathematics buddy (shoulder partner) for a peer discussion about starting the number sentence with the total and take away the boys. Record the number sentence on the paper, using the designated colors. 21 − 14 = 7 Record the number sentence on the chart paper, using the designated colors. 21 − 7 = 14 GE will draw arrows to accentuate the pattern on the chart paper. GE will write the four key points on the chart paper. equal symbols and their meanings. On their dry-erase boards, have students write the number sentence using the number of boys and girls to find the total number of students in the class. Ask the students to check their answer by using the strategies mentioned at the beginning of the activity. Discuss writing the number of boys and girls in different position of the number sentence. Ask students what would happen if we started with the total and took away the number representing the boys, leaving only the girls in the class. Have students write the problem on their dry erase boards. Students need to check their answer with the teacher’s answer. Ask the students to do the same with taking away the number of girls. Have students write the problem on their dry erase boards. Students need to check their answer with the teacher’s answer.
2-5a-related-facts-co-teach.docx