The concept of pi is one of great importance to all developed civilization and one that can be explored and mastered by elementary students through an inductive and problem-solving approach. Such an approach is outlined and discussed. The approach involves the following biblical quotation: "And he made a moltin sea ten cubits from one brim to the other: It was round all about, and its height was five cubits, and a line of thirty cubits did compass it round about." The quotation is reproduced on the board and students, in a problem-solving situation, attempt to try to find the value that the Hebrews attributed to pi. Materials needed for students to investigate this problem themselves inductively include straight pins, manilla folders, centimeter graph paper, envelopes, strip of colored tape, and large adhesive dots. In addition to detailed instructional strategies, extension and enrichment ideas are provided. These include measuring "around" and "across" circles with a flexible ruler and working with a mnemonic devised to remember pi to 30 decimal places. (JN)