Here's where I get my science kits - this is what they include for Apologia General science:
http://www.hometrainingtools.com/product_categories/45/products/2473-general-science---science-kit
Product Details:
This kit includes the following items:
Alum, 100 g
Balloon set
Modeling clay
Cork, size 2, pack of 2
Funnel, plastic, 65 mm dia.
Iodine solution (Lugol's) 30ml
Limestone sample
Magnifying glass, 2" diameter
Pebbles, 1 lb.
Plaster of paris, 4 oz.
Sand, coarse, 1 lb.
Stirring rod, 6"
Tubing, 4.8 mm rubber, 2' long
Washers, 1" diameter, 5/pack