23. Danny rebels (07:01)

Date:
1948
Main contributors:
Columbia Pictures Corporation, Robert Cohn, Arthur A. Ross, Nedrick Young, Will Jason, Vincent J. Farrar, James Sweeney, George Brooks, Frank Tuttle, Helen Hunt, Carter De Haven Jr., Russell Malmgren, Irving Klein, Mischa Bakaleinikoff, Wyonna O'Brien, George Coulouris, Ted Donaldson, Sharyn Moffett, John Litel, Ann Doran, Paula Raymond, Peggy Converse, Flame
Summary:
Teaching Film Custodians classroom film of excerpts from the 1948 Columbia Pictures Corporation feature film, "Rusty Leads the Way". When 10-year old Danny decides his parents exercise too strict control, he decides to run away from home. His parents help him pack and bid him farewell. Outside the front door Danny decides he has been too hasty and re-enters the house, unaware of their anxiety. The parents' ruse proves successful.

30. Determining molecular formulas (12:45)

Date:
1961
Main contributors:
Max J. Rosenberg, Ellis Katzman, Elbert C. Weaver, John A. Skarulis, William H. Pasfield, Herman J. Engel, Robert Braverman, Ross Lowell, Geraldine Lerner, Peter Robinson
Summary:
Records an experiment in which the molecular weight of a compound is determined through knowledge of the percentage composition by weight of the compound and application of Avogadro's Law. Animation is employed to show the differences in characteristics of two substances of identical composition through reference to the substances' molecular structure.