OPENING MATERIAL I. INTRODUCTION II. LITERATURE REVIEW III. METHODS IV. TEACHERS, STUDENTS, AND SCHOOLS: FIVE DIFFERENT CLASSROOMS, FIVE DIFFERENT APPROACHES V. THE PROGRAMMING OF RANDOMIZED PRACTICE PROBLEMS VI. PRESENTATION OF FINDINGS VII. INTERPRETATIONS OF DATA AND IDENTIFICATION OF THEMES VIII. RESPONSE TO RESEARCH QUESTIONS IX. SUMMARY AND RECOMMENDATIONS REFERENCES APPENDIX A: E-MAIL REQUEST FOR TEACHER PARTICIPATION APPENDIX B: UNL IRB APPROVAL LETTER APPENDIX C: LPS APPROVAL LETTER APPENDIX D: E-MAIL TO PRINCIPAL APPENDIX E: PARENT CONSENT FORM APPENDIX F: CHILD ASSENT FORM APPENDIX G: EDU QU CODE APPENDIX H: 5TH GRADE MATHEMATICS OBJECTIVE CARD