This manual distills simple and practical ways to employ eye movement desensitization and reprocessing (EMDR) therapy scripted protocols and forms to effectively utilize the entire EMDR therapy eight-phased treatment with infants, toddlers, young children, preteens, and teens from a developmental perspective. It provides step-by-step directions, session protocols, scripts, and forms for each phase of the protocol, along with instructions for integrating techniques and tools from play, art, sand tray, and other helpful therapies. The various phases of EMDR therapy are: case conceptualization, preparation, assessment, desensitization, installation, body scan, closure and reevaluation. A therapist can use a cognitive interweaves (CI) when reprocessing is blocked, when the child/teen is looping, when time is running out, or when it is necessary to expedite the session so that the client does not remain in a highly activated state. Resource development and installation (RDI) is used when the child/teen does not appear to have adequate tolerance to use EMDR therapy; bilateral stimulation (BLS) is used to install the resource. Mapping and graphing tools help to organize the EMDR therapy, especially with children, and can be integrated into the eight-phases of treatment. While using a fidelity questionnaire, a therapist can monitor his or her own adherence to the phases in order to improve practice and prevent therapist drift, application of a blocking beliefs questionnaire is used to discern the blocking beliefs of children and adolescents.