VCR's have been a practical and inexpensive way to show video tapes in the classroom. However, newer DVD technology is replacing video tapes. Many publishers are converting existing videos to DVD. Others are creating new material to bring the content current in time.
VCR's have become a "disposable" technology, meaning that if it needs to be repaired, it is cheaper to purchase a new VCR than fix it. Better yet, it may be replaced with a "Combo Unit" which has a VCR and DVD player built into one.
There are many different brands and models that may be in techrooms. Two common brands are Panasonic and Mitsubishi. The images provided are for general reference and can be used in troubleshooting any VCR.