For each of the following age groups you will need to provide at least 3-5 important benchmarks of development for each domain (typical development): Birth-3 months 3-6 months 6-12 months 12-24 months 24-36 months 3 years-4 years 4 years -5 years 5 years - 8 years The format of this timeline can be however you want it to look. You can arrange it by age or by domain. It can be an actual timeline, or you can make it a graph/table/ or other format if need be. It needs to be clearly organized, correct, and accessible. You will need to cite the sources you use to note your benchmarks. I recommend using multiple sources. This is something you may want to reference in the future, so I would recommend making it something you can add to, take notes on, or access easily when needed ?