The study investigated how using algebra tiles in group work affected students’ algebra achievement, algebraic thinking and views about using algebra tiles. 40 sixth grade students in the same school participated in a pretest-posttest control group design study. Students in the experimental group (EG) used algebra tiles in groups and those in the control group (CG) continued with their regular instruction. Prior Algebra Knowledge Test and Algebra Achievement Test were implemented to both groups as pretest and posttest. EG students expressed their views in the Views about Algebra Tiles Questionnaire. Although students’ performances did not differ in the statistical analysis in both tests, qualitative analysis of the responses revealed that algebra tiles had positive effect on EG students’ algebraic thinking. EG students indicated that using algebra tiles in group work supported their learning, they made them understand the concepts meaningfully, and the lessons were more enjoyable.