Use addition and subtraction within 100 to solve one- and two-step
word problems involving situations of adding to, taking from, putting
together, taking apart, and comparing, with unknowns in all positions,
e.g., by using drawings and equations with a symbol for the unknown
number to represent the problem.
| Name |
Description |
| Word Problems Galore! | This lesson contains multiple word problems from various situation types. Different numbers for each problem are given based on student need. |
| Table Top Problem | In this Model Eliciting Activity, MEA, The Junior League needs the students' help to determine which table rental company to use for their Charity Auction. With a tight budget, limited time, and a mistake in the order, students must create a procedure for determining the best rental company, write an explanation about their procedure, and present their recommendations to the class.
Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. MEAs resemble engineering problems and encourage students to create solutions in the form of mathematical and scientific models. Students work in teams to apply their knowledge of science and mathematics to solve an open-ended problem, while considering constraints and tradeoffs. Students integrate their ELA skills into MEAs as they are asked to clearly document their thought process. MEAs follow a problem-based, student centered approach to learning, where students are encouraged to grapple with the problem while the teacher acts as a facilitator. To learn more about MEA’s visit: https://www.cpalms.org/cpalms/mea.aspx |
| Sweet Donut Shop | In this Model Eliciting Activity, MEA, students will help the Sweet Donut Shop determine what the newest donut will be. Students are given the cost to make each batch along with the selling price and are asked to determine the profit for each batch. Students create a procedure for ranking the donuts and write a letter explaining the procedure and the ranking. In the “twist” students are provided the starting and finishing times for each batch. They must determine the total amount of time, decide if their procedure should change based on the new information, and write a letter explaining whether the procedure changed and the new ranking of the donuts.
Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. MEAs resemble engineering problems and encourage students to create solutions in the form of mathematical and scientific models. Students work in teams to apply their knowledge of science and mathematics to solve an open-ended problem, while considering constraints and tradeoffs. Students integrate their ELA skills into MEAs as they are asked to clearly document their thought process. MEAs follow a problem-based, student centered approach to learning, where students are encouraged to grapple with the problem while the teacher acts as a facilitator. To learn more about MEA’s visit: https://www.cpalms.org/cpalms/mea.aspx |
| Words and Subtraction | In this lesson, students will build on their earlier work of representing and solving situational problems (result unknown, change unknown, start unknown). Students will use related equations or drawings. |
| Let's Do Some Solving | In this lesson students will solve one-step addition word problems using base ten blocks, hundred charts, drawings, or strategies based on place value and/or the relationship between addition and subtraction. |
| Roll and Add Two Digit Numbers | In this lesson students will use two dice to roll and add two-digit numbers. Students will also use their numbers to create and solve one-step addition word problems. |
| Are Your Numbers Equal to My Numbers? | This is a lesson that reinforces the meaning of the equal sign while students determine the unknown whole number in an addition equation. |
| Amazing Animal Athletes (Addition and Subtraction Story Problems) | In this lesson, students will be able to solve one and two step word problems using addition and subtraction to compare human and animal athletic abilities. This lesson focuses on identifying the information given, comparing numbers, and identifying the missing information needed to solve the word problem using either addition or subtraction. |
| Kelly's Jelly | Students use problem solving skills, data sets presented in a chart, two and three digit addition, writing skills and money skills to determine which brand of jelly beans they would like to purchase. The jelly beans differ in taste, quantity, and cost. The students must then check their procedure to determine if it will work when given an additional piece of data. Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. Click here to learn more about MEAs and how they can transform your classroom. |
| Ten-Hut! Part-2 (Subtraction) | This fun, kinesthetic lesson allows students to gain insight into how to use place value when subtracting a one-digit number from a two-digit number. The focus is on students using their bodies, as well as math manipulatives, to solve subtraction problems within 100 that do not require regrouping. |
| Success with Story Problems - Addition/Subtraction | In this lesson, students will solve one and two-step real-world problems using a variety of problem-solving strategies. |
