Have students work in pairs to choose three numerical facts about Texas to use to make up one addition and one related subtraction story problem. These numbers could be generated through exploration with the calculator, then verified with manipulatives or reasoning. Have students write their story problems on the Texas recording sheet and record the number sentences for the solutions on the back. Have students trade their recording sheets and work one another's problems, using manipulatives if necessary. Students can record them in their math journals.
Students can choose their own topic to write story problems about and make a book of problems.