diff --git a/f22/andy_lec_notes/lec_04/.ipynb_checkpoints/lec04_vars_exprs_850-checkpoint.ipynb b/f22/andy_lec_notes/lec04_Sep14_VarsExprs/.ipynb_checkpoints/lec04_vars_exprs_850-checkpoint.ipynb
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rename to f22/andy_lec_notes/lec04_Sep14_VarsExprs/.ipynb_checkpoints/lec04_vars_exprs_850-checkpoint.ipynb
diff --git a/f22/andy_lec_notes/lec_04/.ipynb_checkpoints/lec04_vars_exprs_template-checkpoint.ipynb b/f22/andy_lec_notes/lec04_Sep14_VarsExprs/.ipynb_checkpoints/lec04_vars_exprs_template-checkpoint.ipynb
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rename to f22/andy_lec_notes/lec04_Sep14_VarsExprs/.ipynb_checkpoints/lec04_vars_exprs_template-checkpoint.ipynb
diff --git a/f22/andy_lec_notes/lec_04/.ipynb_checkpoints/lec_04_850-checkpoint.ipynb b/f22/andy_lec_notes/lec04_Sep14_VarsExprs/.ipynb_checkpoints/lec_04_850-checkpoint.ipynb
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rename to f22/andy_lec_notes/lec04_Sep14_VarsExprs/.ipynb_checkpoints/lec_04_850-checkpoint.ipynb
diff --git a/f22/andy_lec_notes/lec_04/lec04_vars_exprs_850.ipynb b/f22/andy_lec_notes/lec04_Sep14_VarsExprs/lec04_vars_exprs_completed.ipynb
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rename to f22/andy_lec_notes/lec04_Sep14_VarsExprs/lec04_vars_exprs_completed.ipynb
diff --git a/f22/andy_lec_notes/lec_04/lec04_vars_exprs_template.ipynb b/f22/andy_lec_notes/lec04_Sep14_VarsExprs/lec04_vars_exprs_template.ipynb
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rename to f22/andy_lec_notes/lec04_Sep14_VarsExprs/lec04_vars_exprs_template.ipynb
diff --git a/f22/andy_lec_notes/lec_04/readme.md b/f22/andy_lec_notes/lec04_Sep14_VarsExprs/readme.md
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