This set of 30 task cards, gets students solving for variables in a fun, non-threatening, easy access way. Two types of problems are presented. First students are shown envelopes with stamps. Some stamps have numeric values listed, others do not. Given the total cost of the stamps on the envelope, students are challenged to determine the value of the stamps without values listed.
The second type of problem presented in these task cards are pan balance problems. Some problems have only one answer, some have multiple solutions. Students are encouraged to record multiple solutions using t-charts.
Problems get increasingly more difficult. Students are challenged to explain and justify their thinking. Finally, students are challenged to create their own similar type problems.
A student recording sheet is provided for students to document their answers. An answer key is also provided.