78 TEACHING SCIENCE IN THE ELEMENTARY SCHOOL

 The Audio-Visual Way. The State Department of Educa-
 tion Bulletin No. 22B, The Audio-Visual Way contains a descrip-
 tion of the values to be found in each type of audio-visual mater-
 ial and sets up criteria for judging the effectiveness of the many
 materials now being offered to the schools. All teachers will
 find it helpful in their work. Those who are concerned with
 ordering material are especially urged to consult the bulletin.
 Services of the General Extension Division. It is now possible
 for schools to supplement their own efforts by borrowing ma-
 terial from the General Extension Division. The Department of
 Visual Instruction is in a position to supply four types of ma-
 terials for classroom use:

 1. Florida Cooperative Film Library-The films in this
 collection are available to those schools having a mem-
 bership in the Library.
 2. Florida Film Depositors-Films in this collection are
 available to all schools and citizens within the State
 of Florida. Users are required to pay postage both
 ways.
 3. Lantern Slides-Approximately 225 sets of lantern
 slides cover-a wide range of school topics are avail-
 able. Users may obtain same by payment of postage.
 Lantern slide projectors are available on the same
 basis.
 4. Filmstrip collection-Approximately 150 filmstrips
 are available. Users may obtain same by payment of
 postage both ways. Filmstrip projectors are avail-
 able on the same basis.

 For further information as to the titles of films and slides
and as to procedures for ordering materials, write to Mr. George
L. Crutcher, Department of Visual Instruction, General Exten-
sion Division, Gainesville.

Materials and Services from Curriculum Laboratories
 Each state university maintains a curriculum laboratory.
Here are gathered professional books, courses of study and cur-
riculum guides from states and cities having outstanding schools,
library books, and a variety of textbooks. Individuals or faculty
groups are invited to make use of these materials either by
coming to the Curriculum Laboratory or by requesting specific
material by mail.