The phrase "additional activities include" is correct and usable in written English.
You can use it when listing or describing extra tasks or events that are part of a larger set of activities.
Example: "In addition to the main conference sessions, additional activities include workshops, networking events, and panel discussions."
Alternatives: "further activities consist of" or "supplementary activities feature".
Additional activities include bird-feeder workshops for children and a planetarium show on winter constellations.
Additional activities include ten-minute crafts, cookie decorating, nature hikes, ballet demos and more!
Additional activities include hiking around and on the craters and domes, and mountain biking outside of the Scenic Area boundaries.
Additional activities include guided hikes and fishing, or you can indulge in an End of the Trail body massage and a prickly pear margarita at the Doghouse Saloon.
WFDB's additional activities include sponsoring the World Diamond Congress every two years, as well as the establishment of the International Diamond Council (IDC) to oversee diamond grading.
In this case, additional activities include the following: emergency care, which includes hospitalisation, specialised analysis, medical intervention and emergency medication; regular visits to specialists such as cardiologists, diabetes specialists and endocrinologists; regular investigations; post-traumatic long-term medication; and post-traumatic long-term rehabilitation.
Users can also log nutrition, weight, additional activities (including sexual activity) and other health information on the site in order to gain a complete picture of their health.
Additional activities included viewing of an insulin initiation video and hands-on experience with an insulin pen.
Additional activities included movies directly related to pharmacology and four PhD-level seminar speakers who talked about their current research.
Additional activities included FWA registration of the Nigerian institution in Osogbo and human subjects training (CITI) for those investigators who did not already have that certification.
piRNA processing requires additional activities, including the eIF-4A-like translation factor Vasa (Vas), the Heterochromatin Protein 1 (HP1) variant Rhino (Rhi), the helicases Spindle-E and Armitage, the putative nucleases Maelstrom, Zucchini and Squash and the Tudor-domain proteins Tejas and Krimper (Khurana and Theurkauf, 2010; Saito and Siomi, 2010; Senti and Brennecke, 2010).
